List of crurotarsans
Encyclopedia
This list of crurotarsans is a comprehensive listing of all genera
that have ever been included in the clade Crurotarsi
, excluding purely vernacular terms. Under some definitions Crurotarsi includes all archosaurs, but this list excludes archosaur genera that are included in Avemetatarsalia
(pterosaur
s, nonavian dinosaur
s, and bird
s). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium
), or were not formally published (nomen nudum
), as well as junior synonyms of more established names, and genera that are no longer considered crurotarsan. Extinct taxa are denoted with a dagger (†). The list contains 516 names, of which approximately 397 are considered either valid crurotarsan genera or nomina dubia.
Naming conventions and terminology follow the International Code of Zoological Nomenclature
. Technical terms used include:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
that have ever been included in the clade Crurotarsi
Crurotarsi
The Crurotarsi are a group of archosauriformes, represented today by the crocodiles,...
, excluding purely vernacular terms. Under some definitions Crurotarsi includes all archosaurs, but this list excludes archosaur genera that are included in Avemetatarsalia
Avemetatarsalia
Avemetatarsalia is a clade name established by British palaeontologist Michael Benton in 1999 for all crown group archosaurs that are closer to birds than to crocodiles. It includes a similarly defined subgroup, Ornithodira...
(pterosaur
Pterosaur
Pterosaurs were flying reptiles of the clade or order Pterosauria. They existed from the late Triassic to the end of the Cretaceous Period . Pterosaurs are the earliest vertebrates known to have evolved powered flight...
s, nonavian dinosaur
Dinosaur
Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...
s, and bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
s). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium
Nomen dubium
In zoological nomenclature, a nomen dubium is a scientific name that is of unknown or doubtful application...
), or were not formally published (nomen nudum
Nomen nudum
The phrase nomen nudum is a Latin term, meaning "naked name", used in taxonomy...
), as well as junior synonyms of more established names, and genera that are no longer considered crurotarsan. Extinct taxa are denoted with a dagger (†). The list contains 516 names, of which approximately 397 are considered either valid crurotarsan genera or nomina dubia.
Scope and terminology
There is no official, canonical list of crurotarsan genera, but one of the most thorough attempts can be found on the Crurotarsi section of Mikko Haaramo's Phylogeny Archive. That list has been supplemented with the Paleofile listing for Crocodylomorpha.Naming conventions and terminology follow the International Code of Zoological Nomenclature
International Code of Zoological Nomenclature
The International Code of Zoological Nomenclature is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals...
. Technical terms used include:
- Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen.
- Nomen nudumNomen nudumThe phrase nomen nudum is a Latin term, meaning "naked name", used in taxonomy...
(Latin for "naked name"): A name that has appeared in print but has not yet been formally published by the standards of the ICZN. Nomina nuda (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum and will be italicized on this list. Often, the formally published name will differ from any nomina nuda that describe the same specimen. In this case, these nomina nuda will be deleted from this list in favor of the published name. - Preoccupied name: A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced. As preoccupied names are not valid generic names, they will also go unitalicized on this list.
- Nomen dubiumNomen dubiumIn zoological nomenclature, a nomen dubium is a scientific name that is of unknown or doubtful application...
(Latin for "dubious name"): A name describing a fossil with no unique diagnostic features. This can be an extremely subjective and controversial designation and is to be used cautiously.
A
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- †AcaenasuchusAcaenasuchusAcaenasuchus is an extinct member of the order Aetosauria, endemic to what would be North America during the Triassic, existing for approximately .It was a heavily armored aetosaur with thorn-like spikes on its back....
- †AcherontisuchusAcherontisuchusAcherontisuchus is an extinct genus of dyrosaurid neosuchian from Middle to Late Paleocene deposits of Colombia. The only known species is A. guajiraensis, whose name means "Acheron crocodile of the Guajira Peninsula".-Description:...
- †AcompsosaurusAcompsosaurusAcompsosaurus is an extinct genus of aetosaur. It is known from a partial skeleton found from the Petrified Forest Member of the Chinle Formation near Fort Wingate, New Mexico, which is now lost. The generic name means "sturdy lizard." It may be a junior synonym of Stagonolepis as its pelvis...
- †AcynodonAcynodonAcynodon is an extinct genus of alligatoroid crocodilian. When first described it was placed within the family Alligatoridae, but has since been reclassified as a globidontan. It is the oldest and most primitive globidontan known to date, with fossils being found from France, Spain, Italy, and...
- †AdamanasuchusAdamanasuchusAdamanasuchus is an extinct genus of aetosaur. Fossils have been found from several localities from the Chinle Group in Arizona and date back to the Carnian stage of the Late Triassic. The locality from which it was named after also lends its name to the Adamanian land vertebrate faunachron....
- †AdamantinasuchusAdamantinasuchusAdamantinasuchus is an extinct genus of notosuchian crocodylomorph from the Late Cretaceous of Brazil.-Phylogeny:Below is a cladogram modified from O’Connor et al., 2010:...
- †AdzhosuchusAdzhosuchusAdzhosuchus is an extinct genus of crocodylomorph in the family Shartegosuchidae. Fossils have been found from southwestern Mongolia that date back to the Late Jurassic period....
- †AegyptosuchusAegyptosuchusAegyptosuchus is an extinct eusuchian genus of the family Aegyptosuchidae. This taxon was coined by Kuhn as a monotypic family-level taxon redundant with the Cretaceous genus Aegyptosuchus. Carroll classified the genus in the family Stomatosuchidae. Only one species is descript, Aegyptosuchus...
- †Aeolodon — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †AetosauroidesAetosauroidesAetosauroides is an extinct genus of aetosaur from the Late Triassic of South America. It is one of three aetosaurs known from South America, the others being Neoaetosauroides and Chilenosuchus. Two species have been named: the type species A. scaglia and a second called A...
— junior synonym of StagonolepisStagonolepisStagonolepis is an extinct genus of aetosaur. It was about long.An aetosaur, Stagonolepis was a quadrupedal animal covered in thick armoured scales that ran down the length of the its body. A slow-moving browser, it would have used this heavy body armour to repel attacks from contemporary... - †AetosaurusAetosaurusAetosaurus is an extinct genus of archosaur reptile belonging to the order Aetosauria. It is generally considered to be the most primitive aetosaur. Three species are currently recognized: A. ferratus, the type species from Germany and Italy; A. crassicauda from Germany; and A. arcuatus from...
- †Aggiosaurus — junior synonym of DakosaurusDakosaurusDakosaurus is an extinct genus within the family Metriorhynchidae that lived during the Late Jurassic and Early Cretaceous. It was large, with teeth that were serrated and compressed lateromedially . The genus was established by Friedrich August von Quenstedt in 1856 for an isolated tooth named...
- †AigialosuchusAigialosuchusAigialosuchus is an extinct crocodylomorph from Sweden. It lived during the Late Cretaceous....
- †AkanthosuchusAkanthosuchusAkanthosuchus is an extinct genus of alligatoroid crocodilian, possibly an alligatorine. Its fossils are found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico, USA. It is known from a partial skeleton and isolated bony armor...
- †AktiogavialisAktiogavialisAktiogavialis is an extinct genus of crocodylian from the Oligocene Epoch some thirty million years ago. Only one species in the genus, Aktiogavialis puertoricensis, has been described so far....
- †AlbertochampsaAlbertochampsaAlbertochampsa is an extinct genus of globidontan alligatoroid from the Late Cretaceous of Alberta. It was named in 1972 by Bruce Erickson, and the type species is A. langstoni. It is known from a skull from the Campanian-age Dinosaur Park Formation, where it was rare; Leidyosuchus is the most...
- †AldabrachampsusAldabrachampsusAldabrachampsus is an extinct genus of crocodylian. A horned crocodile, its incomplete remains were found on Aldabra Atoll in the western Indian Ocean. It was small and lived during the Pleistocene....
- AlligatorAlligatorAn alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two extant alligator species: the American alligator and the Chinese alligator ....
- †AlligatorellusAlligatorellusAlligatorellus is a genus of atoposaurid crocodyliform found in France that was related to Atoposaurus.A skeleton of Alligatorellus has also been found in the Solnhofen Limestone of Kelheim, Germany. The limestone was deposited in a marine environment and the individual may have washed into a...
- †AlligatoriumAlligatoriumAlligatorium is an extinct genus of atoposaurid crocodylomorph. Alligatorium remains have been found in Germany and Mongolia. There are several species included within the genus. The type species is A. meyeri, named in 1871. Other species include A. franconicum, named in 1906, and A paintenense,...
- †AllodaposuchusAllodaposuchusAllodaposuchus is an extinct genus of eusuchian crocodylomorph and an early relative of crocodilians. It lived during the Upper Cretaceous in Southern Europe ....
- †AllognathosuchusAllognathosuchusAllognathosuchus is an extinct genus of alligatorine crocodylian with a complicated taxonomic history. This small alligatorine is known for its stout jaws and bulbous teeth, found near the rear of the tooth row in upper and lower jaws. These adaptations have historically been interpreted as...
- †AmargasuchusAmargasuchusAmargasuchus is an extinct genus of crocodylomorph. It was a member of the Trematochampsidae, an enigmatic family of mesoeucrocodylians. Fossils have been found from the La Amarga Formation in Argentina and date back to the Barremian and Aptian stages of the Early Cretaceous...
- †Amphicotylus — junior synonym of GoniopholisGoniopholisGoniopholis is an extinct genus of crocodyliform that lived in North America, Europe and Asia during the Late Jurassic and Early Cretaceous. Being semi-aquatic it is very similar to modern crocodiles...
- †AnatosuchusAnatosuchusAnatosuchus is an extinct genus of notosuchian crocodylomorph discovered in Gadoufaoua, Niger, and described by a team of palaeontologists led by the American Paul Sereno in 2003, in the Journal of Vertebrate Paleontology...
- †AngistorhinopsisAngistorhinopsisAngistorhinopsis is an extinct genus of altirostral pseudopalatine phytosaur. It was named for its supposed resemblance to Angistorhinus by Friedrich von Huene in 1922...
— junior synonym of NicrosaurusNicrosaurusNicrosaurus is an extinct genus of phytosaur reptile. Although it looked and probably lived like a crocodile, it was not closely related to these creatures, instead being a good example of parallel evolution... - †AngistorhinusAngistorhinusAngistorhinus is an extinct genus of phytosaur known from the Late Triassic period of Texas and Wyoming, USA. It was first named by Mehl in 1913 and the type species is Angistorhinus grandis. Other species from Texas and Wyoming, A. alticephalus , A. gracilis and A...
— referred to both RutiodonRutiodonRutiodon is an extinct genus of archosaur belonging to the family Phytosauridae. It lived during the Late Triassic period, and was about 10 to 25 feet in length...
and LeptosuchusLeptosuchusLeptosuchus is an extinct genus of phytosaur with a complex taxonomical history. Fossils have been found from the Dockum Group and lower Chinle Formation outcropping in Texas, New Mexico, and Arizona and date back to the Carnian stage of the Late Triassic.Currently there are believed to be four... - †AnglosuchusAnglosuchusAnglosuchus is an extinct genus of pholidosaurid mesoeucrocodylian. Both species of Anglosuchus were originally assigned to the genus Steneosaurus by Richard Owen in 1884, but were later placed in the new genus. It was once thought to be a teleosaurid but later reassigned to the family...
- †ArambourgiaArambourgiaArambourgia is an extinct genus of alligatorine crocodylian from Europe. It was named in 1905 and synonymized with Allognathosuchus haupti in 1990, but later reassigned as its own genus once again in 2004. It is thought to have been closely related to Hispanochampsa and Procaimanoidea...
- †ArambourgisuchusArambourgisuchusArambourgisuchus was a dyrosaurid crocodylomorph from the late Palaeocene of Morocco, found in the region of Sidi Chenane in 2000, following collaboration by French and Moroccan institutions, and described in 2005 by a team led by palaeontologist Stéphane Jouve.Its type and only species is A...
- †AraripesuchusAraripesuchusAraripesuchus is a genus of extinct crocodyliform whose species existed during the Cretaceous period of the late Mesozoic era some 125 to 65 million years ago. They are generally considered to be notosuchians , characterized by their varied teeth types and distinct skull elements...
- †Archaeosuchus — preoccupied by a synapsidSynapsidSynapsids are a group of animals that includes mammals and everything more closely related to mammals than to other living amniotes. They are easily separated from other amniotes by having an opening low in the skull roof behind each eye, leaving a bony arch beneath each, accounting for their name...
, renamed ProtosuchusProtosuchusProtosuchus is an extinct genus of carnivorous crocodylomorph from the Early Jurassic. The name Protosuchus means "first crocodile", and is among the earliest animals that resemble crocodilians... - †ArenysuchusArenysuchusArenysuchus is an extinct genus of crocodyloid from Late Cretaceous deposits of north Spain. It is known from the holotype MPZ ELI-1, a partial skull from Elías site and from the referred material MPZ2010/948, MPZ2010/949, MPZ2010/950 and MPZ2010/951, four teeth from Blasi 2 site...
- †ArganarhinusArganarhinusArganarhinus is an extinct genus of phytosaur known from the late Triassic period of Argana basin in Morocco. It is known from a skull which is housed at the Muséum national d'Histoire naturelle. It was first named by Long and Murry in 1995 and the type species is Arganarhinus magnoculus...
- †ArganasuchusArganasuchusArganasuchus is a genus of rauisuchid archosaur. Its fossils have been found in Upper Triassic rocks of the Argana Basin, Morocco. It is based on remains found in the 1970s and initially thought to belong to the rauisuchian Ticinosuchus. Bones recovered include part of the upper jaws, neck...
- †Argentinosuchus — junior synonym of StagonolepisStagonolepisStagonolepis is an extinct genus of aetosaur. It was about long.An aetosaur, Stagonolepis was a quadrupedal animal covered in thick armoured scales that ran down the length of the its body. A slow-moving browser, it would have used this heavy body armour to repel attacks from contemporary...
- †ArgochampsaArgochampsaArgochampsa is an extinct genus of gavialoid crocodilian, related to modern gharials. It lived in the Paleocene of Morocco. Described by Hua and Jouve in 2004, the type species is A. krebsi, with the species named for the late professor B. Krebs...
- †ArizonasaurusArizonasaurusArizonasaurus was a ctenosauriscid archosaur from the Middle Triassic . Arizonasaurus is found in the Middle Triassic Moenkopi Formation of northern Arizona. A fairly complete skeleton was found in 2002 by Sterling Nesbitt. The taxon has a large sailback formed by elongate neural spines of the...
- †ArmadillosuchusArmadillosuchusArmadillosuchus is an extinct genus of sphagesaurid crocodylomorph. It was described in February 2009 from the Late Cretaceous Bauru Basin of Brazil. Sphagesaurids share a number of mammal-like features in their teeth and jaws, although they are unrelated to mammals...
- Aromosuchus — junior synonym of PaleosuchusPaleosuchusPaleosuchus is a South American genus of reptile in the Alligatoridae family. They are the smallest members of the order Crocodilia in the Americas.The genus contains two species:* Cuvier's Dwarf Caiman ....
- †Arribasuchus — junior synonym of PseudopalatusPseudopalatusPseudopalatus is an extinct genus of pseudopalatine phytosaur. It was assigned to Parasuchia in 2005. Specimens have been found from Arizona and New Mexico and are of Norian age...
- †ArtzosuchusArtzosuchusArtzosuchus is an extinct genus of basal crocodylomorph. Specimens have been found from the Üüden Sair locality of the Djadochta Formation in Mongolia and date back to the Campanian stage of the Late Cretaceous. Because of the fragmentary nature of the material associated with the genus, its...
- †AsiatosuchusAsiatosuchusAsiatosuchus is an extinct genus of large crocodilian. It is believed to have been a basal crocodile. Specimens have been found from Russia, Belgium, France, Germany, Mongolia, and possibly Pakistan. It existed from the Danian stage of the early Paleocene epoch to the Lutetian stage of the Eocene...
- †Atacisaurus — junior synonym of PristichampsusPristichampsusPristichampsus is an extinct genus of pristichampsid crocodylian that grew to approximately three metres in length....
- †AtlantosuchusAtlantosuchusAtlantosuchus is an extinct genus of dyrosaurid crocodylomorph from Morocco. One defining characteristic that distinguishes it from other long-snouted dyrosaurids was its proportionally elongate snout, the longest in proportion to body size of any dyrosaurid...
- †AtoposaurusAtoposaurusAtoposaurus is an extinct genus of crocodylomorph. It is the type genus of the family Atoposauridae. Fossils have been found that were Late Jurassic in age from two distinct species in France and Germany....
- †AustralosuchusAustralosuchusAustralosuchus is an extinct genus of crocodilian belonging to the subfamily Mekosuchinae.The type and only known species Australosuchus clarkae lived during the Late Oligocene and the Early Miocene of southern Australia. The generic name Australosuchus means "Southern crocodile"...
- †AyllusuchusAyllusuchusAyllusuchus is an extinct genus of sebecid mesoeucrocodylian. Fossils have been found from Argentina of early Eocene age....
B
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- †BaharijodonBaharijodonBaharijodon is an extinct genus of trematochampsid crocodylomorph. Fossils have been found that date back to the Cenomanian stage of the Late Cretaceous.-External links:* in the Paleobiology Database...
- †BalanerodusBalanerodusBalanerodus is an extinct genus of alligatorid crocodylian. Fossils have been found from the Fitzcarrald Arch in the Peruvian Amazon and date back to the Laventan regional South American age of the middle Miocene .-External links:...
- †BarberenasuchusBarberenasuchusBarberenasuchus is an extinct genus of early basal crocodylomorph. Fossils have been found from the Santa Maria Formation of southern Brazil of Late Triassic age. It is named in honor of Mário Costa Barberena.-References:* * *...
- †BarcinosuchusBarcinosuchusBarcinosuchus is an extinct genus of carnivorous metasuchian from the early Cretaceous period. It is a peirosaurid which lived during the early Cretaceous period in what is now Chubut Province, Argentina. It is known from the holotype MPEF-PV 3095, which consists of skull, mandible, and...
- †BarinasuchusBarinasuchusBarinasuchus is an extinct genus of sebecid mesoeucrocodylian...
- †Baroqueosuchus — junior synonym of ProtosuchusProtosuchusProtosuchus is an extinct genus of carnivorous crocodylomorph from the Early Jurassic. The name Protosuchus means "first crocodile", and is among the earliest animals that resemble crocodilians...
- †BaruBaruBaru was an extinct genus of Australian mekosuchine crocodilian. It was semi-aquatic, around 4 m in length. Being semi-aquatic its habitat was around fresh pools of water in wet forests, ambushing their prey, much like modern species...
- †BaryphractaBaryphractaBaryphracta is an extinct genus of diplocynodontid crocodilian. It is closely related to the genera Diplocynodon and Tadzhikosuchus. Fossils have been found from the Messel Pit near Messel, Germany, which was deposited during the Middle Eocene epoch of the Paleogene period...
- †BasutodonBasutodonBasutodon was a genus of rauisuchian archosaur from the late Carnian-early Norian-age Upper Triassic Lower Elliot Formation of Lesotho. It is based on teeth that were once confused with prosauropod remains, as with Teratosaurus. Because of this, it is sometimes listed in older dinosaur books as an...
- †BatrachotomusBatrachotomusBatrachotomus is a genus of prehistoric archosaur. Fossils of this animal have been found in southern Germany and dated from the Ladinian stage of Middle Triassic period, around 228 to 231 million years ago. Batrachotomus was described by palaeontologist David J...
- †BaurusuchusBaurusuchusBaurusuchus is an extinct genus of baurusuchid mesoeucrocodylian from the Late Cretaceous of Brazil. It was a terrestrial predator and scavenger, about 3.5 to 4 meters long. Baurusuchus lived during the Turonian to Santonian stages of the Late Cretaceous Period, in Adamantina Formation, Brazil...
- †BelodonBelodonBelodon is a genus of phytosaur, a crocodile-like reptile that lived during the Triassic. Its fossils have been found in Europe and elsewhere...
- †BergisuchusBergisuchusBergisuchus is an extinct genus of sebecosuchian mesoeucrocodylian. Fossils have been found from the Eocene Messel Pit in Germany. Bergisuchus was originally classified as a sebecosuchian, supposedly the first to be found outside of South America, and later assigned to Trematochampsidae in 1988....
- †BernissartiaBernissartiaBernissartia is an extinct genus of crocodyliform that lived in the Early Cretaceous, around 130 million years ago.At only in length, Bernissartia is one of the smallest crocodyliforms that ever lived. It resembled modern species in many respects, and was probably semi-aquatic...
- †Bombifrons — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †BorealosuchusBorealosuchusBorealosuchus is an extinct genus of crocodilian that lived from the Late Cretaceous to the Eocene in North America. It was named by Chris Brochu in 1997 for several species that had been assigned to Leidyosuchus. The species assigned to it are:B...
- †BottosaurusBottosaurusBottosaurus is an extinct genus of crocodile. Specimens have been found from New Jersey, North and South Carolina, and Colorado. It had distinctively thick osteoderms that lacked the pitting of most other crocodylians...
- †Boverisuchus — junior synonym of PristichampsusPristichampsusPristichampsus is an extinct genus of pristichampsid crocodylian that grew to approximately three metres in length....
- †BrachychampsaBrachychampsaBrachychampsa is an extinct genus of alligatoroid. Specimens have been found from New Mexico, Colorado, Wyoming, Montana, North and South Dakota, New Jersey, and Saskatchewan. One specimen has been found from the Darbasa Formation of Kazakhstan, although the species status is indeterminant for the...
- †BrachygnathosuchusBrachygnathosuchusBrachygnathosuchus is an extinct genus of crocodilian. Fossils have been found from the Upper Purus River in western Brazil. As there was no lithified strata for the original specimen to be correlated with , the fossils cannot be dated with any certainty...
- †BrachysuchusBrachysuchusBrachysuchus is an extinct genus of phytosaur known from the late Triassic period of Dockum Group in Texas, USA. It is known from the holotype UMMP 10336 is composed of a skull, lower jaws and partial postcranium and from the associated paratype UMMP 14366, nearly complete skull, recovered from...
- †Brachytaenius — junior synonym of GeosaurusGeosaurusGeosaurus is an extinct genus of marine crocodyliform within the family Metriorhynchidae that lived during the Late Jurassic to the Early Cretaceous. Geosaurus was a carnivore that spent much, if not all, its life out at sea...
- †BrachyuranochampsaBrachyuranochampsaBrachyuranochampsa is an extinct crocodilian closely related to, but not within, Crocodylidae.Although reported from as old as the late Campanian stage of the Late Cretaceous, the only robust occurrence of Brachyuranochampsa is B. eversolei from Wyoming . Another species, B...
- †BrasileosaurusBrasileosaurusBrasileosaurus is the name of a sparse collection of fossils that are nomen vanum-- that is, they will probably never be identified. They are believed to be the fossils of a non-dinosaurian archosaur. The type species is B...
- †BretesuchusBretesuchusBretesuchus is an extinct genus of sebecosuchian mesoeucrocodylian within the family Bretesuchidae. Fossils have been found from the Maíz Gordo Formation of northwestern Argentina and date back to the late Paleocene...
- †BrillanceausuchusBrillanceausuchusBrillanceausuchus is an extinct genus of atoposaurid crocodylomorph. Fossils have been found in Early Cretaceous–age rocks of Cameroon. The genus is notable for the position of the secondary choana within its palate...
- †BromsgroveiaBromsgroveiaBromsgroveia is an extinct genus of predatory archosaur from the Triassic of England. Ctenosauriscids were a group of rauisuchians that was related to the ancestors of modern crocodiles and alligators....
C
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- CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few...
- †Caimanoidea — junior synonym of AlligatorAlligatorAn alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two extant alligator species: the American alligator and the Chinese alligator ....
- †Caimanoideus — lapsus calami of Caimanoidea
- †Caimanoeda — lapsus calami of Caimanoidea
- †Caimanosuchus — junior synonym of DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- Caigator — junior synonym of AlligatorAlligatorAn alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two extant alligator species: the American alligator and the Chinese alligator ....
- †CaipirasuchusCaipirasuchusCaipirasuchus is an extinct genus of sphagesaurid notosuchian known from the Late Cretaceous of São Paulo State, southeastern Brazil.-Discovery:...
- †CalsoyasuchusCalsoyasuchusCalsoyasuchus is a genus of goniopholidid mesoeucrocodylian that lived in the Early Jurassic. Its fossilzed remains were found in the Sinemurian-Pliensbachian-age Kayenta Formation on Navajo Nation land in Coconino County, Arizona, United States. Formally described as C...
- †CalyptosuchusCalyptosuchusCalyptosuchus is an extinct genus of crurotarsan from the Late Triassic of North America. As an aetosaur, it was heavily armored and had a pig-like snout used to uproot plants. The genus might be a junior synonym of Stagonolepis....
— junior synonym of StagonolepisStagonolepisStagonolepis is an extinct genus of aetosaur. It was about long.An aetosaur, Stagonolepis was a quadrupedal animal covered in thick armoured scales that ran down the length of the its body. A slow-moving browser, it would have used this heavy body armour to repel attacks from contemporary... - †CampinasuchusCampinasuchusCampinasuchus is an extinct genus of baurusuchid mesoeucrocodylian which existed in the Minas Gerais State, Brazil during the late Cretaceous period . It is known from four partial skulls from the Honorópolis District of the Adamantina Formation, Bauru Basin. The specimens were collected at Três...
- †CandidodonCandidodonCandidodon is an extinct genus of notosuchian mesoeucrocodylian. Fossils have been found of Early Cretaceous age from Brazil. The genus is characterized by a particularly elongate pair of choanae in its palate. It has been named the type genus of the family Candidodontidae, first constructed in 2004...
- †Capellineosuchus — misspelling of Capelliniosuchus
- †Capelliniosuchus — once thought to be a metriorhynchid, now known to be a mosasaurMosasaurMosasaurs are large extinct marine lizards. The first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764...
- †CarandaisuchusCarandaisuchusCarandaisuchus is an extinct genus of caiman. Fossils have been found from the Ituzaingó Formation in Argentina. It was unique among crocodilians in having a pronounced bony occipital crest. The genus has been proposed to be synonymous with Mourasuchus, a strange nettosuchid with an unusually long,...
- †CaririsuchusCaririsuchusCaririsuchus is an extinct genus of trematochampsid crocodylomorph. Fossils have been found from the Romualdo Member of the Santana Formation in northeastern Brazil, dating back to the Albian stage of the Early Cretaceous. It was about 1.5m in length....
- †CentemodonCentemodonCentemodon is an extinct genus of phytosaur from the Late Triassic Period. It lived in what is now present-day North America. It is classified as a nomen dubium.-References:* in the Dinosaur On-Line Omnipedia...
- †CeratosuchusCeratosuchusCeratosuchus is an extinct genus of alligatorine from latest Paleocene rocks of Colorado's Piceance Basin and earliest Eocene rocks of Wyoming's Bighorn Basin in North America, a slice of time known as the Clarkforkian North American Land Mammal Age. Like its modern relatives, Ceratosuchus was a...
- †CerrejonisuchusCerrejonisuchusCerrejonisuchus is an extinct genus of dyrosaurid crocodylomorph. It is known from a complete skull and mandible from the Cerrejón Formation in northeastern Colombia, which is Paleocene in age. Specimens belonging to Cerrejonisuchus and to several other dyrosaurids have been found from the Cerrejón...
- Champsa — referred to both AlligatorAlligatorAn alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two extant alligator species: the American alligator and the Chinese alligator ....
and CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few... - †Champse — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †CharactosuchusCharactosuchusCharactosuchus is an extinct genus of crocodilian. It was assigned to the family Crocodylidae in 1988. Specimens have been found from Colombia, Brazil, Jamaica, and possibly Florida and South Carolina...
- †"Chasmatosuchus" — preoccupied by a proterosuchid archosaur, referred to JaikosuchusJaikosuchusJaikosuchus is an extinct genus of archosauriform that is likely an erythrosuchid. Fossils have been found from European Russia that date back to the upper Olenekian stage of the Early Triassic. The genus is quite poorly known, however, and the remains of other erythrosuchids that are also from...
- †Chatterjeea — junior synonym of ShuvosaurusShuvosaurusShuvosaurus is a genus of beaked reptile from the Late Triassic of Texas. It was described by Sankar Chatterjee in 1993 after it was discovered by his son Shuvo. It was initially interpreted as a Triassic member of the Cretaceous dinosaur family Ornithomimidae...
- †ChenanisuchusChenanisuchusChenanisuchus is a genus of dyrosaurid crocodyliform from the Late Cretaceous of Mali and the Late Palaeocene of Sidi Chenane in Morocco. It was described in 2005, after expeditions uncovered it in 2000.The type species is C...
- †ChiayusuchusChiayusuchusChiayusuchus is an extinct genus of stomatosuchid crocodylomorph. Fossils have been found from the Xinminbao Group in Gansu, China. It existed during the Barremian and Aptian stages of the Early Cretaceous. It was in the same family as the large, flat-snouted crocodilian Stomatosuchus.-External...
- †ChilenosuchusChilenosuchusChilenosuchus is an extinct genus of aetosaur. Fossils have been found from the Antofagasta Region in northern Chile. The presence of Chilenoasaurus in the beds that it was found in conflicts with the inferred age of the strata...
- †ChimaerasuchusChimaerasuchusChimaerasuchus is an extinct genus of Chinese crocodyliform from the Early Cretaceous. The four teeth in the very tip of its short snout gave it a "bucktoothed" appearance. Due its multicusped teeth and marked heterodonty, it is believed to have been an herbivore....
- †ChrysochampsaChrysochampsaChrysochampsa is an extinct genus of alligatorine. Fossils have been found from the Golden Valley Formation of North Dakota and date back to the Wasatchian regional North American faunal stage of the early Eocene...
- †Cladeiodon — possible senior synonym of TeratosaurusTeratosaurusTeratosaurus was a genus of rauisuchian known from the Triassic Stubensandstein of Germany...
- †Clarencea
- †CoahomasuchusCoahomasuchusCoahomasuchus is an extinct genus of aetosaurine stagonolepidid. Fossils have been found from the Dockum Group in western Texas and date back to the Otischalkian faunachron of the Late Triassic. It was small for an aetosaur, being less than 1 meter long. The dorsal plates are distinctively flat...
- †CoburgosuchusCoburgosuchusCoburgosuchus is an extinct genus of pseudopalatine phytosaur. The genus was named for Coburg, Germany, the type locality where specimens have been found dating back to the Late Triassic...
— junior synonym of NicrosaurusNicrosaurusNicrosaurus is an extinct genus of phytosaur reptile. Although it looked and probably lived like a crocodile, it was not closely related to these creatures, instead being a good example of parallel evolution... - †CoelosuchusCoelosuchusCoelosuchus is an extinct genus of goniopholidid mesoeucrocodylian. Fossils have been found from the Graneros Shale of the Benton Group in Wyoming, and are of Cenomanian age. It was slightly over 1 meter in length....
- †CollilongusCollilongusCollilongus is an extinct genus of small archosauriform, possibly a rauisuchian, known from Early Triassic rocks of Czatkowice 1, Poland. It was first named by Magdalena Borsuk−Białynicka; and Andriej G. Sennikov in 2009. The type and only known species is Collilongus rarus...
- †ColossoemysColossoemysColossoemys is an extinct genus of alligatoroid crocodilian. It inhabited South America during the Pleistocene epoch. The genus was originally named on the basis of two large procoelous vertebrae, a pubis, and a plastral fragment...
- †ComahuesuchusComahuesuchusComahuesuchus is an extinct genus of notosuchian crocodylomorph from the Late Cretaceous of Argentina. It was described by palaeontologist José Bonaparte in 1991.The type species is C. brachybuccalis.- Material :...
- †CongosaurusCongosaurusCongosaurus is an extinct genus of dyrosaurid mesoeucrocodylian. Fossils have been found from Angola and date back to the Paleocene epoch. In 1952 and 1964 Congosaurus was proposed to be synonymous with Dyrosaurus. The genus was later regarded to be synonymous with Hyposaurus in 1976 and 1980...
- †CoringasuchusCoringasuchusCoringasuchus is a genus of mesoeucrocodylian crocodyliform, perhaps a notosuchian. It is known from fossils including cranial material discovered in rocks of the early Cenomanian-age Upper Cretaceous Alcântara Formation, Cajual Island, northeastern Brazil. Coringasuchus was described by A.W.A....
- †CricosaurusCricosaurusCricosaurus is an extinct genus of marine crocodyliform belonging to the family Metriorhynchidae. The genus was established by Johann Andreas Wagner in 1858 for three skulls from the Tithonian of Germany...
- †CrocodilaemusCrocodilaemusCrocodilaemus is an extinct genus of pholidosaurid mesoeucrocodylian. Fossils have been found from the Cerin Lagerstätte of eastern France and are of late Kimmeridgian age...
- CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †CtenosauriscusCtenosauriscusCtenosauriscus is an extinct genus of sail-backed poposauroid archosaur from Early Triassic deposits of Lower Saxony in northern Germany. It gives its name to the family Ctenosauriscidae, which includes other sail-backed poposauroids such as Arizonasaurus...
- Ctenosaurus — preoccupied by extant iguanid, referred to CtenosauriscusCtenosauriscusCtenosauriscus is an extinct genus of sail-backed poposauroid archosaur from Early Triassic deposits of Lower Saxony in northern Germany. It gives its name to the family Ctenosauriscidae, which includes other sail-backed poposauroids such as Arizonasaurus...
- †"CunampaiaCunampaiaCunampaia is a dubious genus of extinct mesoeucrocodylian. Fossils have been found from the Divisadero Largo Formation of Mendoza Province, Argentina, and date back to the Divisaderan regional South American Land Mammal Age of the lower Eocene epoch. Originally it was regarded as a gruiform bird,...
" — a nomen dubium; originally considered a phorusrhacid bird, probably a mesoeucrocodyliaMesoeucrocodyliaMesoeucrocodylia is the name of the clade that includes Eusuchia and the paraphyletic group Mesosuchia. The group appeared during the Early Jurassic, and continues to the present day....
n - †CynodontosuchusCynodontosuchusCynodontosuchus is an extinct genus of baurusuchid mesoeucrocodylian. Fossils have been found from Argentina of Late Cretaceous age from the Bajo de la Carpa Formation as well as the Pichi Picun Leufu Formation...
- Cynosuchus — junior synonym of CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few...
- †Cystosaurus
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- †Dacosaurus — lapsus calami of DakosaurusDakosaurusDakosaurus is an extinct genus within the family Metriorhynchidae that lived during the Late Jurassic and Early Cretaceous. It was large, with teeth that were serrated and compressed lateromedially . The genus was established by Friedrich August von Quenstedt in 1856 for an isolated tooth named...
- †DakosaurusDakosaurusDakosaurus is an extinct genus within the family Metriorhynchidae that lived during the Late Jurassic and Early Cretaceous. It was large, with teeth that were serrated and compressed lateromedially . The genus was established by Friedrich August von Quenstedt in 1856 for an isolated tooth named...
- †DakotasuchusDakotasuchusDakotasuchus is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the Cenomanian-age Upper Cretaceous Dakota Sandstone of Kansas. The type specimen was found in an iron-cemented sandstone concretion near Salina...
- †Dasygnathus — synonym of OrnithosuchusOrnithosuchusOrnithosuchus is an extinct genus of crurotarsan from the Late Triassic Lossiemouth Sandstone of Scotland...
- †DecuriasuchusDecuriasuchusDecuriasuchus is an extinct genus of prestosuchid rauisuchian from the Middle Triassic period . It is a carnivorous archosaur that lived in what is now southern Brazil. It was first named by Marco Aurélio G. França, Jorge Ferigolo and Max C. Langer in 2011 and the type species is Decuriasuchus...
- †DeinosuchusDeinosuchusDeinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma , during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos , "terrible", and soukhos , "crocodile"...
- †DenazinosuchusDenazinosuchusDenazinosuchus is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the Upper Cretaceous Fruitland Formation and Kirtland Formation of the San Juan Basin, New Mexico...
- †Desamatosuchus — lapsus calami of DesmatosuchusDesmatosuchusDesmatosuchus is an extinct genus of archosaur belonging to the Order Aetosauria. It was one of the largest aetosaurs, being long and about 1.50 m high. It lived during the Late Triassic in Texas....
- †DesmatosuchusDesmatosuchusDesmatosuchus is an extinct genus of archosaur belonging to the Order Aetosauria. It was one of the largest aetosaurs, being long and about 1.50 m high. It lived during the Late Triassic in Texas....
- †DianchungosaurusDianchungosaurusDianchungosaurus is an extinct genus of mesoeucrocodylian crocodylomorph from the Early Jurassic of China. It was previously considered a dinosaur, but it was recently reclassified as a mesoeucrocodylian by Paul Barrett and Xing Xu . It is probably the same animal as the informally named...
- †DianosuchusDianosuchusDianosuchus is an extinct genus of protosuchid crocodylomorph. Fossils have been found from the Dark Red Beds of the Lower Lufeng Formation in Yunnan, China, dating back to the Sinemurian stage of the Early Jurassic...
- †DibothrosuchusDibothrosuchusDibothrosuchus is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin. It is known from several partial skeletons and skulls. These fossils were found in Lower Jurassic rocks of Yunnan, China...
- †DinosuchusDinosuchusNot to be confused with Deinosuchus, a North American alligatoroid.Dinosuchus is a problematic genus of extinct alligatorid crocodylomorph. It was very large compared to other alligatorids, save for the giant caiman Purussaurus and its closest relatives...
- †DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- †Diplocynodus — junior synonym of DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- †DiplosaurusDiplosaurusDiplosaurus is an extinct genus of goniopholidid mesoeucrocodylian. Fossils have been found from the western United States and range from Late Jurassic to Early Cretaceous in age. The genus was first named and described in a paper written in 1877 by Othniel Charles Marsh...
- †DolichobrachiumDolichobrachiumDolichobrachium is a dubious genus of extinct poposaurid crurotarsan. Fossils have been found from the Popo Agie Formation in Wyoming and are of Late Triassic age. It was one of the first rauisuchians to have been named....
- †DolichochampsaDolichochampsaDolichochampsa is an extinct genus of eusuchian crocodylomorph. It is the type genus and only member of the family Dolichochampsidae. Fossils have been found from Argentina and Bolivia of Maastrichtian age. It had a distinctive slender snout. Because the material associated with the specimens is so...
- †DollosuchoidesDollosuchoidesDollosuchoides is an extinct genus of crocodilian. It is a basal tomistomine closely related to the genus Tomistoma, of which the only extant species of tomistomine, the False gharial, is a member of. Fossils have been found from Belgium and date back to the middle Eocene....
- †DollosuchusDollosuchusDollosuchoides is an extinct tomistomine. . It is a basal form possibly related to Kentisuchus, according to several phylogenetic analyses that have been conducted in recent years, and is the oldest known tomistomine to date. Fossils have been found from Belgium and the United Kingdom...
- †DongusiaDongusiaDongusia is an extinct genus of rauisuchid reptile from the Middle Triassic of Russia. The type species D. colorata was named by German paleontologist Friedrich von Huene in 1940 on the basis of a single vertebra. This bone was found in the Sol-Iletsky District of Orenburg Oblast. Huene thought...
- †DongusuchusDongusuchusDongusuchus is an extinct genus of rauisuchian. Fossils have been found from the Donguz Formation outcropping on the banks of the Donguz River in the Orenburg Oblast of Russia...
- †DoratodonDoratodonDoratodon is an extinct genus of crocodylomorph that was once believed to be a dinosaur.- Species :The type species is D. carcharidens from the Late Cretaceous of Austria, whilst the second known species is D. ibericus from the Late Cretaceous of Spain.-References:*Company, J., Suberbiola, X.P.,...
- †DoswelliaDoswelliaDoswellia is an extinct genus of archosauriform. It has been placed in its own family, Doswellidae, and its own suborder, Doswelliina. It was a terrestrial carnivore that existed in eastern North America during the Carnian stage of the Late Triassic. Fossils have been found from the Poor Farm...
- †DromicosuchusDromicosuchusDromicosuchus is an extinct genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin. It was found in Upper Triassic rocks of North Carolina, United States, and is known from a nearly complete skull and partial skeleton...
- †DuerosuchusDuerosuchusDuerosuchus is an extinct genus of crocodilian. Remains have been found from Corrales del Vino in Zamora, Spain, and are middle Eocene in age...
- †DyoplaxDyoplaxDyoplax is an extinct genus of sphenosuchian crocodylomorph. Fossils have been found from the type locality within the upper Schilfsandstein Formation in Stuttgart-Feuerbach, Germany. The formation was deposited during the early Carnian stage of the Late Triassic 228 million years ago in a lagoonal...
- †DyrosaurusDyrosaurusDyrosaurus was an extinct genus of dyrosaurid crocodyliform from the Eocene of North Africa. The type species D. phosphaticus possessed slender jaws with numerous recurved teeth, indicative of a primarily fish diet...
- †DzungarisuchusDzungarisuchusDzungarisuchus is an extinct genus of crocodile.Fossils have been found from Xinjiang, China of late Eocene age. The only remains that have been found have been isolated postcranial and jaw fragments. As a result, the genus is poorly known. All material yet found has been referable to the type...
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- †EbrachosaurusEbrachosaurusEbrachosaurus is an extinct genus of aetosaur. It was named after the town of Ebrach, Germany, near an outcrop of the Blasensandstein Formation where the original fossils have been found. Other Blasensandstein fauna include the temnospondyl Metoposaurus and the phytosaur Francosuchus. The genus has...
— junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more... - †EbrachosuchusEbrachosuchusEbrachosuchus is an extinct genus of basal phytosaurid phytosaur. Fossils were first discovered from the Blasensandstein Formation near Ebrach, Germany, which dates back to the Carnian stage of the Late Triassic....
- †EdentosuchusEdentosuchusEdentosuchus is a genus of protosuchian crocodylomorph. It is known from fossils found in rocks of the Early Cretaceous-age Tugulu Group from the Junggar Basin, Xinjiang, China. Two partial skulls and several neck vertebrae are known to date...
- †Effigia
- †"Eleiosuchus" — nomen nudum, referred to ElosuchusElosuchusElosuchus is an extinct genus of neosuchian crocodyliform that lived during the Early Cretaceous of what is now North Africa ....
- †ElosuchusElosuchusElosuchus is an extinct genus of neosuchian crocodyliform that lived during the Early Cretaceous of what is now North Africa ....
- †Enaliosuchus — junior synonym of CricosaurusCricosaurusCricosaurus is an extinct genus of marine crocodyliform belonging to the family Metriorhynchidae. The genus was established by Johann Andreas Wagner in 1858 for three skulls from the Tithonian of Germany...
- †EnergosuchusEnergosuchusEnergosuchus is an extinct genus of rauisuchian. Fossils are present from the upper Karyomayol and lower Synya formations outcropping along the banks of the Bolshaya Synya River in the Timan-North Urals region in northern European Russia, as well as from the Bukobay Formation in the sothern part...
- †Engyomasaurus — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †EntradasuchusEntradasuchusEntradasuchus is a genus of crocodyliform, an early member of the group including crocodilians. The only known specimen was found in rocks of the Middle Jurassic Entrada Sandstone of Entrada Ranch, Grand County, Utah...
- †EoalligatorEoalligatorEoalligator is an extinct genus of crocodilian which lived during the Paleocene. First described by Chinese paleontologist C.C. Young in 1964, two species have been named: Eoalligator chunyii and Eoalligator huiningensis.-External links:...
- †EocaimanEocaimanEocaiman is an extinct genus of caiman from the Eocene of Argentina.-External links:* in the Paleobiology Database...
- †Eocenosuchus — junior synonym of DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- †EogavialisEogavialisEogavialis is an extinct gavialoid. It superficially resembles Tomistoma schlegelii, the extant false gharial, and consequently material from the genus was originally referred to Tomistoma...
- †EoneustesEoneustesEoneustes is an extinct genus of metriorhynchoid crocodyliform from Middle Jurassic deposits of France. Eoneustes was a carnivore that lived in the oceans and spent much, if not all, its life out at sea.-Discovery and species:*E. bathonicus: Western Europe of the Middle Jurassic...
- †EopneumatosuchusEopneumatosuchusEopneumatosuchus is an extinct genus of basal crocodyliform. Fossils have been found from two localities within the Kayenta Formation of Arizona. Both localities are around 20 miles southeast of the Grand Canyon and in close proximity to one another...
- †EosuchusEosuchusEosuchus is an extinct genus of gavialoid crocodilian. It is among the most basal of all gavialoids, lying crownward of all other known members of the superfamily, including earlier members such as Thoracosaurus and Eothoracosaurus. Fossils have been found from France as well as eastern North...
- †EothoracosaurusEothoracosaurusEothoracosaurus is an extinct genus of gavialoid crocodilian. It was one of the earliest and most basal gavialoids known. Fossils are present from the Ripley Formation in Mississippi, and date back to the early Maastrichtian stage of the Late Cretaceous...
- †Episcoposaurus — junior synonym of TypothoraxTypothoraxTypothorax is an extinct genus of aetosaur that lived in the Late Triassic. Its remains have been found in North America. Two species are known: T. coccinarum, the type species, and T. antiquum.-Description:...
- †EremosuchusEremosuchusEremosuchus is an extinct genus of sebecosuchian mesoeucrocodylian. Fossils have been found from El Kohol, Algeria of Eocene age. It had serrated, ziphodont teeth....
- †ErpetosuchusErpetosuchusErpetosuchus is an extinct genus of crurotarsan from the Late Triassic. It was first described by E. T. Newton in 1894 for remains found in northeastern Scotland, with more remains found in the United States in recent years. Erpetosuchus is the sister-taxon to Crocodylomorpha.The type species of...
- †ErythrochampsaErythrochampsaErythrochampsa is an extinct genus of protosuchian crocodylomorph. Fossils have been found from the Red Beds of the Stormberg Group, the youngest group of strata from the Karoo Supergroup outcropping in South Africa.Material from E...
- †EuscolosuchusEuscolosuchusEuscolosuchus is an extinct genus of suchian crurotarsan closely related to crocodylomorphs. Fossils have been found from the Tomahawk Creek Member of the Turkey Branch Formation outcropping in east-central Virginia...
- †EuthecodonEuthecodonEuthecodon is an extinct genus of longirostrine crocodyline crocodilian. It was common throughout much of Africa during the Neogene, with fossils being especially common in Kenya. It existed from the Early Miocene to the Early Pleistocene.-Description:...
- †EutretauranosuchusEutretauranosuchusEutretauranosuchus is a genus of goniopholidid mesoeucrocodylian. It is known from several specimens collected from the Late Jurassic-age Morrison Formation, including fossils from Garden Park and Dry Mesa Quarry in Colorado and Como Bluff in Wyoming. The type species is E. delfsi...
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- †FasolasuchusFasolasuchusFasolasuchus is an extinct genus of rauisuchid rauisuchian. Fossils have been found from Argentina that date back to the Rhaetian stage of the Late Triassic, making it one of the last rauisuchians to have existed before the order went extinct at the end of the Triassic...
- †FenhosuchusFenhosuchusFenhosuchus is an extinct genus of archosauriform. Fossils have been found from China and date back to the Early Triassic. The genus was named after the Fen River in Shanxi Province from which specimens were found. It may prove to be a chimera being composed of material from several different...
- †FerganosuchusFerganosuchusFerganosuchus is an extinct genus of gavialid crocodilian. The genus is thought to be a tomistomine, although it has been suggested that Ferganosuchus may be a more basal gavialoid. Fossils have been found in the region of Kazakhstan and Kyrgyzstan that date back the middle Eocene...
- †Francosuchus — junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †"FruitachampsaFruitachampsa"Fruitachampsa" is an informal name for an as-yet undescribed genus of mesoeucrocodylian from the Upper Jurassic Morrison Formation of Colorado. It is known from multiple specimens that show it to have been a relatively long-limbed terrestrial quadrupedal predator less than long, with a short...
" — a nomen nudum, possibly a shartegosuchidShartegosuchidaeShartegosuchidae is an extinct family of Late Jurassic and Early Cretaceous crocodylomorphs. The family is named after the Late Jurassic Shar Teeg Beds in southwestern Mongolia, from which most shartegosuchid remains have been found. Four genera are currently assigned to Shartegosuchidae:...
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- †Galtonia — probable junior synonym of RevueltosaurusRevueltosaurusRevueltosaurus is a genus of prehistoric crurotarsan from Late Triassic New Mexico and Arizona.According to William Parker, who discovered the partial skeleton, "we have pretty much erased the record of Triassic ornithischian dinosaurs from North America, Europe and worldwide, except for South...
- †GavialinumGavialinumGavialinum is an extinct genus of teleosaurid thalattosuchian. Fossils have been found from France that date back to the Bathonian stage of the Middle Jurassic. Despite what its name may suggest, the genus is not related to gavialids as was previously thought, having occurred much earlier than any...
- Gavialis
- †GavialosuchusGavialosuchusGavialosuchus is an extinct tomistomine from the late Oligocene and Miocene of eastern North America and early Miocene of Europe. Three species have been named: the type species G. eggenburgensis from the early Miocene of Austria; G. americanus, from the late Miocene to early Pliocene of Florida;...
- †GeosaurusGeosaurusGeosaurus is an extinct genus of marine crocodyliform within the family Metriorhynchidae that lived during the Late Jurassic to the Early Cretaceous. Geosaurus was a carnivore that spent much, if not all, its life out at sea...
- †GilchristosuchusGilchristosuchusGilchristosuchus is an extinct genus of neosuchian crocodyliform. Its fossils have been found in the upper Milk River Formation of Alberta, Canada, in rocks of either latest Santonian or earliest Campanian age . Gilchristosuchus was described in 1993 by Wu and Brinkman...
- †Glaphyrorhynchus — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †GobiosuchusGobiosuchusGobiosuchus was a gobiosuchid crocodyliform described in 1972 by Polish palaeontologist Halszka Osmólska. It hails from the Late Cretaceous of Bayn Dzak , in the Gobi Desert of Mongolia....
- †GoniopholisGoniopholisGoniopholis is an extinct genus of crocodyliform that lived in North America, Europe and Asia during the Late Jurassic and Early Cretaceous. Being semi-aquatic it is very similar to modern crocodiles...
- †GracilineustesGracilineustesGracilineustes is an extinct genus of marine crocodyliform that lived in the oceans during the Middle to Late Jurassic. Gracilineustes was a carnivore that spent much, if not all, its life out at sea.-Discovery and species:...
- †GracilisuchusGracilisuchusGracilisuchus is an extinct genus of tiny crurotarsan from the Middle Triassic. It was a suchian close to the ancestry of crocodiles, and was at one time thought to be a dinosaur, but this hypothesis has since been rejected...
- †GryposuchusGryposuchusGryposuchus is an extinct genus of gavialoid crocodilian. It is the type genus of the subfamily Gryposuchinae. Fossils have been found from Argentina, Colombia, Venezuela, Brazil and the Peruvian Amazon. The genus existed during the early and middle Miocene epoch. One recently described species, G...
- †GuarinisuchusGuarinisuchusGuarinisuchus is an extinct genus of marine crocodyliform from the Early Paleocene 62 million years ago of Brazil. The type species is G. munizi.- Sources :*http://news.nationalgeographic.com/news/2008/03/photogalleries/crocodile-pictures/index.html...
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- †HadongsuchusHadongsuchusHadongsuchus is an extinct genus of protosuchian crocodylomorph. Fossils have been found from the Hasandong Formation outcropping on Hadong Island, South Korea. The formation dates back to the Hauterivian and Barremian stages of the Early Cretaceous. A complete fossil skull was discovered in 2002,...
- †HaematosaurusHaematosaurusHaematosaurus is an extinct genus of teleosaurid thalattosuchian. Fossils have been found from Boulogne-sur-Mer in northern France of Jurassic age. It was originally thought to be a plesiosaur, and the type species was initially assigned to the genus Plesiosaurus in 1874, although it was later...
- Halcrosia — junior synonym of Osteolaemus
- †Halilimnosaurus — junior synonym of GeosaurusGeosaurusGeosaurus is an extinct genus of marine crocodyliform within the family Metriorhynchidae that lived during the Late Jurassic to the Early Cretaceous. Geosaurus was a carnivore that spent much, if not all, its life out at sea...
- †HallopusHallopusHallopus was a prehistoric reptile, classified by O. C. Marsh in 1881 as a dinosaur. In fact it was probably a crocodilian or possibly a more primitive crurotarsan, and may be closely related to Junggarsuchus ....
- †"HalticosaurusHalticosaurusHalticosaurus is a genus of theropod dinosaur from the Late Triassic period . It was a coelophysoid found in the Middle Stubensandstein formation of what is present-day Germany...
" - †HamadasuchusHamadasuchusHamadasuchus is an extinct genus of sebecian crocodylomorph. Fossils have been found from the Kem Kem Formation outcropping in southeastern Morocco. These beds date back to the Albian and Cenomanian stages of the Late Cretaceous. It was first assigned to the family Trematochampsidae. Diagnostic...
- †HarpacochampsaHarpacochampsaHarpacochampsa camfieldensis is a poorly known Early Miocene crocodilian from the Bullock Creek lagerstatte of the Northern Territory. The current specimen consists of a partial skull and fragments of a slender snout reminiscent of that of a false gharial. It is tentatively placed within...
- †HassiacosuchusHassiacosuchusHassiacosuchus is an extinct genus of small alligatorid from the early Eocene of Germany, found at the Messel pit. It was named in 1935 by K. Weitzel, and the type species is H. haupti. A second species, H. kayi, was named in 1941 by C.C. Mook for material from the Bridgerian of Wyoming, but was...
- †HeliocanthusHeliocanthusHeliocanthus is the name of a problematic genus of aetosaur that has undergone many taxonomic revisions in recent years, and may prove to be synonymous with Rioarribasuchus...
— possible junior synonym of Rioarribasuchus - †HelmstedtisuchusHelmstedtisuchusHelmstedtisuchus is an extinct genus of teleostean fish. Fossils have been found from Helmstedt, Germany that are late Eocene in age. The genus was originally thought to be a eusuchian crocodylomorph, but it is now known to have been a scombrid teleostean fish....
— actually a teleostTeleosteiTeleostei is one of three infraclasses in class Actinopterygii, the ray-finned fishes. This diverse group, which arose in the Triassic period, includes 20,000 extant species in about 40 orders; most living fishes are members of this group...
fishFishFish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups... - †HemiprotosuchusHemiprotosuchusHemiprotosuchus is an extinct genus of protosuchid from the Norian stage of the Los Colorados Formation of South America. It was named by prolific Argentinian paleontologist José Bonaparte in 1969. The type species is H. leali.-External links:...
- †HeptasuchusHeptasuchusHeptasuchus is an extinct genus of rauisuchian from the Carnian stage of the Popo Agie Formation of Wyoming. It was named by Dawley et al. in 1979. The type species is H. clarki....
- †HesperogavialisHesperogavialisHesperogavialis is an extinct genus of gryposuchine gavialid. Fossils have been found from Venezuela and Brazil that date back to the late Miocene and Pliocene...
- †HesperosuchusHesperosuchusHesperosuchus is an extinct genus of crocodylomorph reptile that contains a single species, Hesperosuchus agilis. Remains of this sphenosuchian have been found in Late Triassic strata from Arizona and New Mexico....
- †HeterodontosuchusHeterodontosuchusHeterodontosuchus is a dubious genus of extinct phytosaur. The genus was first described from a fragmentary anterior section of the mandible found from the Henry Mountains in southeastern Utah. More fossils were later found from Arizona. The name Heterodontosuchus refers to the difference in size...
- †HeterosuchusHeterosuchusHeterosuchus is an extinct genus of crocodylomorph that may have been an eusuchian. It is known only from neck and back vertebrae recovered from Early Cretaceous-age rocks of the Hastings Beds Heterosuchus is an extinct genus of crocodylomorph that may have been an eusuchian. It is known only...
- †HispanochampsaHispanochampsaHispanochampsa is an extinct genus of alligatoroid crocodilian. More than 100 fossils dating back to the Oligocene have been found from Lleida, Spain. The genus was first named in 1936, and was initially thought to be an alligatorid...
- †Holops — preoccupied by a brachyceraBrachyceraBrachycera is a suborder of Diptera. It is a major suborder consisting of around 120 families. The most distinguishing characteristic of the suborder is reduced antenna segmentation...
n flyFlyTrue flies are insects of the order Diptera . They possess a pair of wings on the mesothorax and a pair of halteres, derived from the hind wings, on the metathorax...
, renamed Holopsisuchus - †Holopsisuchus — junior synonym of ThoracosaurusThoracosaurusThoracosaurus is an extinct genus of gavialoid crocodilian which existed during the Late Cretaceous and early Paleocene. It contains the species Thoracosaurus neocesariensis in North America and Thoracosaurus macrorhynchus in Europe. A number of species have been referred to this genus, but most...
- †"Hoplitosaurus" — preoccupied by the ankylosauriaAnkylosauriaAnkylosauria is a group of herbivorous dinosaurs of the order Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms. Ankylosaurs were bulky quadrupeds, with short, powerful limbs. They are first known to have appeared in the early Jurassic Period of...
n dinosaurDinosaurDinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...
HoplitosaurusHoplitosaurusHoplitosaurus was a genus of armored dinosaur related to Polacanthus. It was named from a partial skeleton found in the ?Barremian-age Lower Cretaceous Lakota Formation of Custer County, South Dakota. It is an obscure genus which has been subject to some misinterpretation of its damaged remains...
; now known as HoplitosuchusHoplitosuchusHoplitosuchus is an extinct genus of aetosaur. Fossils have been found from the Santa Maria Formation in Rio Grande do Sul, Brazil that date back to the Late Triassic. At first the genus was named Hoplitosaurus, but this name had previously been assigned to a polacanthine ankylosaurian dinosaur in... - †HoplitosuchusHoplitosuchusHoplitosuchus is an extinct genus of aetosaur. Fossils have been found from the Santa Maria Formation in Rio Grande do Sul, Brazil that date back to the Late Triassic. At first the genus was named Hoplitosaurus, but this name had previously been assigned to a polacanthine ankylosaurian dinosaur in...
- †HoplosuchusHoplosuchusHoplosuchus is a genus of crocodylomorph. It is so far only known definitely from one specimen, a skeleton collected from sandstone of the Upper Jurassic-age Morrison Formation rocks at Dinosaur National Monument, Utah, during road construction. The individual was small, approximately long,...
- †HsisosuchusHsisosuchusHsisosuchus is an extinct genus of crocodyliform from China. Currently there are three species within this genus. H. chungkingensis and H. chowi are from the Late Jurassic. H. dashanpuensis is from the Middle Jurassic....
- †HylaeochampsaHylaeochampsaHylaeochampsa is an extinct genus of eusuchian crocodylomorph. It is known only from a partial skull recovered from Barremian-age rocks of the Lower Cretaceous Vectis Formation of the Isle of Wight. This skull, BMNH R 177, is short and wide, with a eusuchian-like palate and inferred enlarged...
- †HyposaurusHyposaurusHyposaurus is a genus of extinct dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Maria Farinha Formation in Pernambuco, Brazil and Iullemmeden Basin in West Africa and Maastrichtian strata in New Jersey. It was related to Dyrosaurus....
- †HypselorhachisHypselorhachisHypselorhachis is a genus of extinct reptile, possibly a ctenosauriscid archosaur related to Ctenosauriscus. It lived during the Triassic Period. It is currently known only from a single vertebra found from the Middle Triassic Manda Beds in Tanzania....
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- †IberosuchusIberosuchusIberosuchus is an extinct genus of sebecid mesoeucrocodylian from the Eocene of western Europe. It was described in 1975 by Antunes from remains from Portugal as a sebecosuchian crocodilian. The type species is I. macrodon...
- †Ichthyosuchus — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †IharkutosuchusIharkutosuchusIharkutosuchus is an extinct genus of basal eusuchian crocodyliform. It fossils have been found in the Santonian-age Upper Cretaceous Csehbánya Formation in the Bakony Mountains of western Hungary...
- †IkanogavialisIkanogavialisIkanogavialis is an extinct genus of gryposuchine gavialoid crocodilian. Fossils have been found from the Urumaco Formation of Venezuela. The strata from which remains are found are late Miocene in age, rather than Pliocene as was once thought....
- †IlchunaiaIlchunaiaIlchunaia is an extinct genus of sebecid mesoeucrocodylian. Fossils have been found from the Divisadero Largo Formation of Argentina dating back to the Late Eocene, and a locality in Mendoza, Argentina dating back to the Oligocene...
- †IschyrochampsaIschyrochampsaIschyrochampsa is an extinct genus of Late Cretaceous mesoeucrocodylian. Fossils of the type species I. meridionalis are late Campanian in age and were found in the commune of Saint-Estève-Janson in Bouches-du-Rhône, France. Material is also known from Spain. At an estimated length of over ,...
- †IsisfordiaIsisfordiaIsisfordia is an extinct genus of crocodyliform closely related to crocodilians that lived during the Middle Cretaceous . Its fossils were discovered in the Winton Formation in Isisford, Queensland, Australia in the mid 1990s...
- †Isselosaurus — referred to both IberosuchusIberosuchusIberosuchus is an extinct genus of sebecid mesoeucrocodylian from the Eocene of western Europe. It was described in 1975 by Antunes from remains from Portugal as a sebecosuchian crocodilian. The type species is I. macrodon...
and Tomistoma - †ItasuchusItasuchusItasuchus is an extinct genus of crocodylomorph from the Late Cretaceous of Brazil. Fossils of the type species I. jesuinoi, first described in 1955 by Llewellyn Ivor Price, have been found from the Marília Formation in Uberaba, Brazil....
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- Jacare — junior synonym of CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few...
- Jacaretinga — referred to both CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few...
and PaleosuchusPaleosuchusPaleosuchus is a South American genus of reptile in the Alligatoridae family. They are the smallest members of the order Crocodilia in the Americas.The genus contains two species:* Cuvier's Dwarf Caiman .... - †JaikosuchusJaikosuchusJaikosuchus is an extinct genus of archosauriform that is likely an erythrosuchid. Fossils have been found from European Russia that date back to the upper Olenekian stage of the Early Triassic. The genus is quite poorly known, however, and the remains of other erythrosuchids that are also from...
- †JunggarsuchusJunggarsuchusJunggarsuchus is an extinct genus of sphenosuchian crocodylomorph from the Middle Jurassic of China. The type species is J. sloani.-Anatomy:...
- †JushatyriaJushatyriaJushatyria is an extinct genus of rauisuchid. Fossils have been found in the district of Kumertau near the Ural Mountains in European Russia that date back to the Ladinian stage of the Middle Triassic. Additional material has been described from a locality on the banks of the Berdyanka River that...
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- †KambaraKambaraKambara is an extinct genus of mekosuchine crocodylian that lived during the Eocene and Oligocene epochs in Australia.At around 55 million years old, remains of Kambara are among the oldest Tertiary fossils found in Australia . Kambara is the oldest known mekosuchine...
- †KansajsuchusKansajsuchusKansajsuchus is a genus of crocodyliform that may have been a goniopholidid mesoeucrocodylian. It is based on PIN 2399/301, a right premaxilla, one of the bones of the tip of the snout. This specimen was found in rocks of the lower Santonian-age Upper Cretaceous Yalovach Svita of Kansai, in...
- †KaprosuchusKaprosuchusKaprosuchus is an extinct genus of mahajangasuchid crocodyliform. It is known from a single nearly complete skull collected from the Upper Cretaceous Echkar Formation of Niger. The name means "boar crocodile" from the Greek kapros and souchos in reference to its unusually large caniniform teeth...
- †KaramuruKaramuruKaramuru is a genus of prestosuchid archosaur from the Middle Triassic-age Santa Maria Formation of Brazil. It was found in the Paleorrota geopark. It is based on remains that had been assigned to Prestosuchus chininiquensis, including a nearly complete skull...
- †KaratausuchusKaratausuchusKaratausuchus is an extinct genus of atoposaurid crocodylomorph. It is known from a single specimen discovered in the Late Jurassic Karabastau Svita from the vicinity of Mikhailovka in the Karatau Mountains of southern Kazakhstan...
- †KayentasuchusKayentasuchusKayentasuchus is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin...
- †KentisuchusKentisuchusKentisuchus is an extinct genus of tomistomine . It is considered one of the most basal members of the subfamily. Fossils have been found from England that date back to the early Eocene...
- †KhoratosuchusKhoratosuchusKhoratosuchus is an extinct genus of neosuchian crocodylomorph which existed in northeast Thailand during the early Cretaceous period. Its type species is Khoratosuchus jintasakuli. Khoratosuchus is the youngest and most advanced Mesozoic crocodyliform yet known from Thailand...
- †Kladeisteriondon — junior synonym of TeratosaurusTeratosaurusTeratosaurus was a genus of rauisuchian known from the Triassic Stubensandstein of Germany...
- †KrabisuchusKrabisuchusKrabisuchus is an extinct alligatorine which existed in what is now Thailand during the late Eocene. It was first named by paleontologists Jeremy A. Martin and Komsorn Lauprasert in 2010, and the type species is K. siamogallicus...
- †KyasuchusKyasuchusKyasuchus is an extinct genus of shartegosuchid crocodylomorph. Fossils have been found from the Ilek Formation outcropping in the Kemerovo Oblast of Russia, deposited during the Aptian and Albian stages of the Early Cretaceous...
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- †LaganosuchusLaganosuchusLaganosuchus is an extinct genus of stomatosuchid crocodyliform. Fossils have been found from Niger and Morocco and date back to the Upper Cretaceous. The name means "pancake crocodile" from the Greek laganon and souchos in reference to the shallow depth of the skull, which is characteristic of...
- †LangstoniaLangstoniaLangstonia is an extinct genus of sebecid mesoeucrocodylian. Its fossils have been found in middle Miocene-age rocks from Colombia, in the "Monkey Beds" of the Villavieja Formation...
- †LeidyosuchusLeidyosuchusLeidyosuchus is an extinct genus of alligatoroid from the Late Cretaceous of Alberta. It was named in 1907 by Lawrence Lambe, and the type species is L. canadensis. It is known from a number of specimens from the middle Campanian age Dinosaur Park Formation...
- †Leptocranius — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †LeptorrhamphusLeptorrhamphusLeptorrhamphus is an extinct genus of gavialoid crocodilian that lived during the Pliocene epoch in what is now Argentina. The type species is L. entrerrianus, named in 1890. It is now thought to be a nomen dubium....
- †LeptosuchusLeptosuchusLeptosuchus is an extinct genus of phytosaur with a complex taxonomical history. Fossils have been found from the Dockum Group and lower Chinle Formation outcropping in Texas, New Mexico, and Arizona and date back to the Carnian stage of the Late Triassic.Currently there are believed to be four...
- †Lesothosuchus — junior synonym of ProtosuchusProtosuchusProtosuchus is an extinct genus of carnivorous crocodylomorph from the Early Jurassic. The name Protosuchus means "first crocodile", and is among the earliest animals that resemble crocodilians...
- †LianghusuchusLianghusuchusLianghusuchus is an extinct genus of crocodylid crocodilian. Fossils date back to the Eocene and have been found from Hunan, China. The type species is L. hengyangensis, named in 1948....
- †LibycosuchusLibycosuchusLibycosuchus is an extinct genus of North African crocodylomorph possibly related to Notosuchus. It was terrestrial, living approximately 95 million years ago in the Cenomanian stage of the Late Cretaceous...
- †Limnosaurus — junior synonym of PristichampsusPristichampsusPristichampsus is an extinct genus of pristichampsid crocodylian that grew to approximately three metres in length....
- †LisboasaurusLisboasaurusLisboasaurus is a small genus of Mesozoic crocodylomorph that lived in fresh water. It is known from fossilized tooth and jaw fragments of Late Jurassic and Early Cretaceous age. Two species have been described. In the past Lisboasaurus has been interpreted as a Mid Jurassic avialan, troodontid,...
- †Listrognathosuchus
- †LitargosuchusLitargosuchusLitargosuchus is an extinct genus of sphenosuchian crocodylomorph from the Early Jurassic of South Africa. Its remains were originally described by Gow and James Kitching in 1988 as belonging to Pedeticosaurus sp....
- †Ltliminosaurus — junior synonym of GeosaurusGeosaurusGeosaurus is an extinct genus of marine crocodyliform within the family Metriorhynchidae that lived during the Late Jurassic to the Early Cretaceous. Geosaurus was a carnivore that spent much, if not all, its life out at sea...
- †LomasuchusLomasuchusLomasuchus is an extinct genus of peirosaurid mesoeucrocodylian. Fossils have been found from the Bajo de la Carpa Formation of the Neuquén Group outcropping in Neuquén Province, Argentina...
- †LongosuchusLongosuchusLongosuchus is an extinct genus of aetosaur from the Late Triassic of North America. It measured about 3 metre in length....
- †LotosaurusLotosaurusLotosaurus is an is an extinct genus of sail-backed poposauroid known from Hunan Province of central China.-Description:Lotosaurus is known from the holotype IVPP V 4881 , articulated well-preserved skeleton, and from the referred specimens IVPP V 48013, skull, articulated and...
- †LucasuchusLucasuchusLucasuchus is an extinct genus of aetosaur. Fossils have been found from the Bull Canyon Formation of the Dockum Group outcropping in the Revuelto Creek locality in Quay County, New Mexico. All specimens date back to the Norian stage of the Late Triassic. The genus was named in 1995 after the...
- †LuperosuchusLuperosuchusLuperosuchus is an extinct genus of crurotarsan, a group which includes crocodilians and their ancestors. It lived during the Anisian stage of the Middle Triassic, and is known from Argentina.-References:* in the Paleobiology Database...
- †LusitanisuchusLusitanisuchusLusitanisuchus is an extinct genus of mesoeucrocodylian crocodylomorph. Mostly fragmentary fossils have been found from several localities in Portugal and are Late Jurassic and Early Cretaceous in age....
- †Lythrosaurus — lapsus calami of Lythrosuchus
- †Lythrosuchus — junior synonym of PoposaurusPoposaurusPoposaurus is a genus of reptile from the Late Triassic of the southwestern United States. It was a crurotarsan archosaur which lived in what is now Wyoming, Utah, Arizona and Texas. The type species, Poposaurus gracilis, was described by M. G. Mehl in 1915. The second species, P...
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- †MacelognathusMacelognathusMacelognathus is an extinct genus of sphenosuchian crocodile from the Late Jurassic. Originally it was believed be a theropod dinosaur. It lived in what is now Wyoming, in North America....
- †MachimosaurusMachimosaurusMachimosaurus is an extinct genus of teleosaurid crocodyliform from the Late Jurassic and Early Cretaceous . The type species, Machimosaurus hugii, was found in France. Other fossils have been found in Austria, England, Germany, Portugal and Switzerland...
- †Macrospondylus — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †Macrorhynchus — junior synonym of PholidosaurusPholidosaurusPholidosaurus is an extinct genus of neosuchian crocodylomorph. It is the type genus of the family Pholidosauridae. Fossils have been found from Germany and England. The genus is known to have existed during the Berriasian stage of the Early Cretaceous...
- †MahajangasuchusMahajangasuchusMahajangasuchus is an extinct genus of crocodyliform which had blunt, conical teeth. The type species, M. insignis, lived during the Late Cretaceous; its fossils have been found in the Maevarano Formation in northern Madagascar.Sereno et al....
- †MalawisuchusMalawisuchusMalawisuchus is an extinct genus of notosuchian mesoeucrocodylian from the Early Cretaceous of Malawi. It was described in 1997 by Elizabeth Gomani as a member of the family Notosuchidae. The type species is M. mwakasyungutiensis, referring to Mwakasyunguti, the area of northern Malawi where it...
- †"MandasuchusMandasuchus"Mandasuchus" is an extinct genus of prestosuchid rauisuchian that is yet to be formally described. Thus, the name is considered a nomen nudum. Fossils have been found from the Manda Formation of Tanzania and date back to the Ladinian or Anisian stage of the Middle Triassic. The name was first used...
" — nomen nudum, probable synonym of TicinosuchusTicinosuchusTicinosuchus is an extinct genus of rauisuchian archosaur from the Middle Triassic of Switzerland and Italy.Ticinosuchus was about long, and its whole body, even the belly, was covered in thick, armoured scutes. The structure of the hips shows that its legs were placed under the body almost... - †Manracosuchus — probable junior synonym of AllognathosuchusAllognathosuchusAllognathosuchus is an extinct genus of alligatorine crocodylian with a complicated taxonomic history. This small alligatorine is known for its stout jaws and bulbous teeth, found near the rear of the tooth row in upper and lower jaws. These adaptations have historically been interpreted as...
- †MariliasuchusMariliasuchusMariliasuchus is an extinct genus of Late Cretaceous notosuchian mesoeucrocodylian found near Marilia, Brazil. It was described in 1999 by Brazilian palaeontologists Ismar de Souza Carvalho and Reinaldo J. Bertini....
- †MarmosaurusMarmosaurusMarmosaurus is an extinct genus of teleosaurid thalattosuchian. The type species, M. obtusus, was named by Richard Owen in 1841....
- †MaroccosuchusMaroccosuchusMaroccosuchus is an extinct genus of tomistomine crocodilian from the early Eocene of Morocco....
- †MassaliasuchusMassaliasuchusMassaliasuchus is an extinct genus of crocodylian that is known from fossils found in Santonian-Campanian-age Upper Cretaceous rocks of southeastern France. Fossils belonging to this genus were published in 1869 by Matheron as Crocodilus affuvelensis. The new genus name was given to it in 2008 by...
- Mecistops — probable junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †MegadontosuchusMegadontosuchusMegadontosuchus is a genus of tomistomine from the middle Eocene of Italy. Fossils have been found from Monte Duello in the province of Verona. The genus is currently monotypic, with the type and only species being M. arduini. The species was originally named in 1880, although it was assigned to...
- †"MegalosaurusMegalosaurusMegalosaurus is a genus of large meat-eating theropod dinosaurs of the Middle Jurassic period of Europe...
" - †MekosuchusMekosuchusMekosuchus is a genus of extinct Australasian crocodiles within the subfamily Mekosuchinae. They are believed to have been made extinct by the arrival of man on the South Pacific islands where they lived...
- MelanosuchusBlack CaimanThe black caiman is a crocodilian. It is a carnivorous reptile that lives along slow-moving rivers and lakes, in the seasonally flooded savannas of the Amazon basin, and in other freshwater habitats in South America. Once common, it was hunted to near extinction primarily for its commercially...
- †Melitosaurus — junior synonym of Tomistoma
- †MenatalligatorMenatalligatorMenatalligator is an extinct genus of alligatorid crocodilian. Fossils have been found that are Eocene in age from a locality in the commune of Menat in the Puy-de-Dôme department of France. The type and only species, named in 1937, is M...
- †MeridiosaurusMeridiosaurusMeridiosaurus is an extinct genus of mesoeucrocodylian that is a possible member of the family Pholidosauridae. Remains have been found from an outcrop of the Tacuarembó Formation in Tacuarembó, Uruguay that dates back to the Early Cretaceous, but may also include very Late Jurassic strata as well...
- †Mesorhinosuchus — junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †Mesorhinus — junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †Metiorychus — lapsus calami of MetriorhynchusMetriorhynchusMetriorhynchus is an extinct genus of marine crocodyliform that lived in the oceans during the Middle to Late Jurassic. Metriorhynchus was named by the German palaeontologist Christian von Meyer in 1830. Metriorhynchus was a carnivore that spent much, if not all, its life out at sea...
- †MetriorhynchusMetriorhynchusMetriorhynchus is an extinct genus of marine crocodyliform that lived in the oceans during the Middle to Late Jurassic. Metriorhynchus was named by the German palaeontologist Christian von Meyer in 1830. Metriorhynchus was a carnivore that spent much, if not all, its life out at sea...
- †Metriorrhynchus — lapsus calami of MetriorhynchusMetriorhynchusMetriorhynchus is an extinct genus of marine crocodyliform that lived in the oceans during the Middle to Late Jurassic. Metriorhynchus was named by the German palaeontologist Christian von Meyer in 1830. Metriorhynchus was a carnivore that spent much, if not all, its life out at sea...
- †MiadanasuchusMiadanasuchusMiadanasuchus is an extinct genus of trematochampsid which existed in Maevarano Formation of Madagascar during the late Cretaceous period . It was first named by Erin L. Rasmusson Simons and Gregory A. Buckley in 2009 and the type species is Miadanasuchus oblita....
- †MicrochampsaMicrochampsaMicrochampsa is an extinct genus of protosuchian crocodylomorph that existed during the Early Jurassic. Fossils have been found from stratum 6 of the Dahuangtian locality, an outcrop of the Lower Red Beds of the Lufeng Formation in Yunnan, China. Parts of the postcranial skeleton, such as the...
- †Microsaurus — lapsus calami of MicrosuchusMicrosuchusMicrosuchus is an extinct genus of goniopholidid mesoeucrocodylian. Fossils have been found that date back to the Late Cretaceous. It may be a nomen dubium.-External links:* in the Paleobiology Database...
- †MicrosuchusMicrosuchusMicrosuchus is an extinct genus of goniopholidid mesoeucrocodylian. Fossils have been found that date back to the Late Cretaceous. It may be a nomen dubium.-External links:* in the Paleobiology Database...
- Molinia — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †MontealtosuchusMontealtosuchusMontealtosuchus was an extinct genus of terrestrial crocodyliform. It was discovered in 2004 in the Bauru Basin of Brazil, from Turonian-Santonian deposits of the Adamantina Formation. The species was described in 2007, and assigned to the family Peirosauridae. The type species is M. arrudacamposi...
- †MontsecosuchusMontsecosuchusMontsecosuchus is an extinct genus of atoposaurid crocodylomorph. It is the replacement generic name for Alligatorium depereti, which was described in 1915 from the Montsec Lithographic Limestone quarry of Spain. Fossils found from this locality are from the Early Cretaceous, being Upper...
- †MorrinhosuchusMorrinhosuchusMorrinhosuchus is an extinct genus of notosuchian crocodyliform from the Late Cretaceous Adamantina Formation of Brazil. It is known from a mandible and a portion of the front of the skull collected from the municipality of Monte Alto in São Paulo state...
- †Mosellaesaurus — junior synonym of PelagosaurusPelagosaurusPelagosaurus is an extinct genus of thalattosuchian crocodyliform that lived during the Toarcian stage of the Lower Jurassic, around 183 Ma to 175 Ma , in shallow epicontinental seas that covered much of what is now Western Europe...
- †Motinia — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †MourasuchusMourasuchusMourasuchus is an extinct genus of giant crocodilian from the Miocene of South America. It was similar in length and weight to Rhamphosuchus...
- †MusturzabalsuchusMusturzabalsuchusMusturzabalsuchus is an extinct genus of crocodylian, and one of the oldest known members of the superfamily Alligatoroidea. The generic name means "Broadened rostrum crocodile", with "Musturzabal" meaning "broadened rostrum" in Basque and "suchus" meaning "crocodile" in Latin. The type and only...
- †Mycterosuchus — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †Mystriosaurus — junior synonym of SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †MystriosuchusMystriosuchusMystriosuchus is an extinct genus of phytosaur that lived in the Late Triassic in Europe. It was first named by Eberhard Fraas in 1896, and includes two species: M. westphali and the type species, M. planirostris...
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- †Nannosuchus — junior synonym of GoniopholisGoniopholisGoniopholis is an extinct genus of crocodyliform that lived in North America, Europe and Asia during the Late Jurassic and Early Cretaceous. Being semi-aquatic it is very similar to modern crocodiles...
- †"NarynsuchusNarynsuchus"Narynsuchus" is an extinct genus of thalattosuchian mesoeucrocodylian. Because it has not yet been formally described, it is currently considered a nomen nudum. The name was first used in 1990 for fossil material found from a formation called the Balabansai Svita, which forms a lens in site FTA-30...
" - †Navahosuchus — probable lapsus calami of NavajosuchusNavajosuchusNavajosuchus is an extinct genus of alligatorine crocodylian. Its fossils have been found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico . It was named in 1942 by Charles C. Mook, and the original type species was N. novomexicanus. N. novomexicanus was based on...
- †NavajosuchusNavajosuchusNavajosuchus is an extinct genus of alligatorine crocodylian. Its fossils have been found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico . It was named in 1942 by Charles C. Mook, and the original type species was N. novomexicanus. N. novomexicanus was based on...
- †NecrosuchusNecrosuchusNecrosuchus is an extinct genus of caiman from the Paleocene.-References:* A Pictorial Guide to Fossils by Gerard Ramon Case...
- †NeoaetosauroidesNeoaetosauroidesNeoaetosauroides is an extinct genus of primitive aetosaur. Its type and only species is N. engaeus. Fossils have been found from the Los Colorados Formation outcropping along the Sierra Morada River in La Rioja, Argentina, and date back to the Norian age of the Late Triassic...
- †NeptunidracoNeptunidracoNeptunidraco is an extinct genus of carnivorous marine crocodyliform which lived during the middle Jurassic period in what is now northeastern Italy. It is known from a partial skeleton recovered from the nodular limestone of the Rosso Ammonitico Veronese Formation...
- †Nettosuchus — junior synonym of MourasuchusMourasuchusMourasuchus is an extinct genus of giant crocodilian from the Miocene of South America. It was similar in length and weight to Rhamphosuchus...
- †NeustosaurusNeustosaurusNeustosaurus is a genus of marine crocodyliform from the Early Cretaceous. Neustosaurus was a carnivore that spent much, if not all, its life out at sea...
— possible senior synonym of CricosaurusCricosaurusCricosaurus is an extinct genus of marine crocodyliform belonging to the family Metriorhynchidae. The genus was established by Johann Andreas Wagner in 1858 for three skulls from the Tithonian of Germany... - †NeuquensuchusNeuquensuchusNeuquensuchus is an extinct genus of basal crocodyliform from the Santonian-age Upper Cretaceous Bajo de la Carpa Formation of Neuquén Province, Argentina. The known remains were discovered on the campus of Universidad Nacional del Comahue in the city of Neuquén. Neuquensuchus was named by Lucas...
- †NicrosaurusNicrosaurusNicrosaurus is an extinct genus of phytosaur reptile. Although it looked and probably lived like a crocodile, it was not closely related to these creatures, instead being a good example of parallel evolution...
- †NominosuchusNominosuchusNominosuchus is a genus of protosuchian-grade crocodylomorph. It is known from several specimens discovered in ancient lake deposits of the Tithonian-age Upper Jurassic Tsagaantsav Formation, southwestern Mongolia. The type specimen is PIN 4174/4, a partial skull. Nominosuchus was not...
- †NordenosaurusNordenosaurusNordenosaurus is an extinct genus of alligatoroid. When first named in 1973 the genus was thought to be a squamate and was assigned to the family Xenosauridae. Fossils have been found from the Norden Bridge locality of the lower Valentine Formation in Brown County, Nebraska, thought to date back to...
- †Nothochampsa — lapsus calami of NotochampsaNotochampsaNotochampsa is an extinct genus of protosuchian crocodylomorph. Fossils have been found from the upper Elliot Formation and the lower Clarens Formation of the Karoo Supergroup in South Africa, dating back to the Early Jurassic. It lends its name to the family Notochampsidae, a taxon that has...
- †NotocaimanNotocaimanNotocaiman is an extinct genus of alligatorid crocodylian. A fragmentary and poorly preserved left dentary found from Argentina that presumably dates back to the Paleocene epoch is all that is known from the genus. It may be a junior synonym of Eocaiman...
- †NotochampsaNotochampsaNotochampsa is an extinct genus of protosuchian crocodylomorph. Fossils have been found from the upper Elliot Formation and the lower Clarens Formation of the Karoo Supergroup in South Africa, dating back to the Early Jurassic. It lends its name to the family Notochampsidae, a taxon that has...
- †NotosuchusNotosuchusNotosuchus is an extinct genus of South American notosuchian crocodylomorph. It was terrestrial, living approximately 85 million years ago in the Coniacian or Santonian stages of the Late Cretaceous. Remains have been found in the Bajo de la Carpa Formation in Patagonia, Argentina. First named in...
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- †OceanosuchusOceanosuchusOceanosuchus is a genus of pholidosaurid mesoeucrocodylian, a type of marine crocodylomorph. It is known from a skull and partial skeleton found in early Cenomanian-age rocks from Normandy, France. The rostrum of the skull was relatively short compared to other pholidosaurids. Oceanosuchus was...
- †OcepesuchusOcepesuchusOcepesuchus is an extinct genus of gavialoid crocodilian, related to modern gharials. It lived in the Late Cretaceous of Morocco. Described by Jouve and colleagues in 2008, the type species is O...
- Oopholis — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †OrnithosuchusOrnithosuchusOrnithosuchus is an extinct genus of crurotarsan from the Late Triassic Lossiemouth Sandstone of Scotland...
- †OrthogenysuchusOrthogenysuchusOrthogenysuchus is an extinct genus of caimanine alligatorid. Fossils have been found from the Wasatch Beds of the Willwood Formation of Wyoming, deposited during the early Eocene. The type species is O. olseni. The holotype, known as AMNH 5178, is the only known specimen belonging to the genus...
- †OrthosuchusOrthosuchusOrthosuchus is an extinct genus of protosuchian crocodyliform that lived during the Early Jurassic....
- Osteoblepharon — junior synonym of OsteolaemusDwarf CrocodileThe dwarf crocodile is an African species of crocodile. It is also the smallest extant crocodile species in the world. Recent sampling has identified three genetically distinct populations...
- OsteolaemusDwarf CrocodileThe dwarf crocodile is an African species of crocodile. It is also the smallest extant crocodile species in the world. Recent sampling has identified three genetically distinct populations...
- †OweniasuchusOweniasuchusOweniasuchus is an extinct genus of goniopholidid mesoeucrocodylian. Remains have been found from England and Portugal that are Cretaceous in age....
- †OxysdonsaurusOxysdonsaurusOxysdonsaurus is an extinct genus of crocodylid crocodilian. Fossils have been found from the Paraná Basin in Argentina that date back to the Oligocene. According to Edward Drinker Cope, the generic name is a misspelling of the intended name Oxyodontosaurus. The genus is known only from a single...
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- †PabwehshiPabwehshiPabwehshi is an extinct genus of mesoeucrocodylian. It is based on GSP-UM 2000, a partial snout and corresponding lower jaw elements, with another snout assigned to it...
- †PachycheilosuchusPachycheilosuchusPachycheilosuchus is an extinct genus of mesoeucrocodylian from the Early Cretaceous of Texas, United States...
- †PachysuchusPachysuchusPachysuchus is an extinct genus of crurotarsan from the Early Jurassic of China. It is known from a poorly preserved partial rostrum that was described from the Lower Lufeng Series in Yunnan by paleontologist C.C. Young in 1951. Young identified the rostrum as that of a phytosaur, a long-snouted...
- †PakasuchusPakasuchusPakasuchus is a genus of notosuchian crocodyliform distinguished by its unusual mammal-like appearance, including mammal-like teeth that would have given the animal the ability to chew. It also had long, slender legs and a doglike nose. Pakasuchus lived approximately 105 million years ago, in the...
- †PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †"Paleosaurus"
- PaleosuchusPaleosuchusPaleosuchus is a South American genus of reptile in the Alligatoridae family. They are the smallest members of the order Crocodilia in the Americas.The genus contains two species:* Cuvier's Dwarf Caiman ....
- Palinia — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †PallimnarchusPallimnarchusPallimnarchus is a genus extinct mekosuchine crocodylian from the Pliocene and Pleistocene of Australia. Remains of this animal have been found in the Riversleigh lagerstätte of northwestern Queensland. It was medium-sized, up to 5 meters long...
- †Paralligator — junior synonym of ShamosuchusShamosuchusShamosuchus is an extinct genus of neosuchian crocodile that lived during the Late Cretaceous period in what is now the Gobi desert of Mongolia, approximately 85 to 65 million years ago. The teeth were adapted to crush bivalves, gastropods and other animals with a shell or exoskeleton . The genus...
- †Parasuchus — junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †ParatomistomaParatomistomaParatomistoma is an extinct genus of tomistomine crocodilian. It is based on CGM 42188, a partial posterior skull and lower jaw discovered at Wadi Hitan, Egypt, in Middle Eocene-age rocks of the Gehannam Formation. The skull is unfused but considered morphologically mature...
- †ParatypothoraxParatypothoraxParatypothorax is an extinct genus of aetosaur. It was first named in 1985 from specimens collected from the Lower Stubensandstein in Germany and was also noted to be present in the Chinle Group of the southwestern United States in both the Dockum and Chinle Formations, which are latest Carnian and...
- †ParringtoniaParringtoniaParringtonia is an extinct genus of Triassic crurotarsan, possibly within the family Erpetosuchidae. It is known from a single specimen, BMNH R8646, found from the Anisian-age Manda Formation of Tanzania. When first described by Friedrich von Huene in 1939, Parringtonia was assigned to the obsolete...
- †ParrishiaParrishiaParrishia is an extinct genus of sphenosuchian crocodylomorph that is currently considered a nomen dubium because of the lack of diagnostic features associated with it...
- †Parussaurus — lapsus calami of PurussaurusPurussaurusPurussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, 8 million years ago. It is known from skull material found in the Brazilian, Colombian and Peruvian Amazonia, and northern Venezuela. The estimated skull length for one large individual of the type...
- †PedeticosaurusPedeticosaurusPedeticosaurus is an extinct genus of sphenosuchian crocodylomorph from the Clarens Formation of South Africa. The type species is P. leviseuri....
- †PehuenchesuchusPehuenchesuchusPehuenchesuchus is an extinct genus of sebecosuchian mesoeucrocodylian. It was discovered in rocks of the late Turonian-Coniacian-age Upper Cretaceous Río Neuquén Formation Pehuenchesuchus (meaning "Pehuenche crocodile", after the Mapuche name for the region in which it was found) is an extinct...
- †PeipehsuchusPeipehsuchusPeipehsuchus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic . The type species, P. teleorhinus, is known from China and fragmentary remains were found in the Callovian of Kyrgyzstan.-References:...
- †PeirosaurusPeirosaurusPeirosaurus is an extinct genus of peirosaurid crocodylomorph. It is the type genus of the family Peirosauridae. Fossils of the type species P. tormini, first described in 1955, have been found from the Marília Formation in Uberaba, Brazil and date back to the late Maastrichtian stage of the Late...
- †PekinosaurusPekinosaurusPekinosaurus is the name given to a genus of pseudosuchian from the Late Triassic. This prehistoric reptile lived in what is now North Carolina, in the United States. The type species, P. olseni, was described by Hunt and Lucas in 1994, based on fossils found in Pekin, North Carolina, whence the...
— probable junior synonym of RevueltosaurusRevueltosaurusRevueltosaurus is a genus of prehistoric crurotarsan from Late Triassic New Mexico and Arizona.According to William Parker, who discovered the partial skeleton, "we have pretty much erased the record of Triassic ornithischian dinosaurs from North America, Europe and worldwide, except for South...
- †PelagosaurusPelagosaurusPelagosaurus is an extinct genus of thalattosuchian crocodyliform that lived during the Toarcian stage of the Lower Jurassic, around 183 Ma to 175 Ma , in shallow epicontinental seas that covered much of what is now Western Europe...
- †Pelagosuchus — probable lapsus calami of PelagosaurusPelagosaurusPelagosaurus is an extinct genus of thalattosuchian crocodyliform that lived during the Toarcian stage of the Lower Jurassic, around 183 Ma to 175 Ma , in shallow epicontinental seas that covered much of what is now Western Europe...
- †PenghusuchusPenghusuchusPenghusuchus is an extinct genus of tomistomine gavialid crocodilian. It is known from a skeleton found in Upper Miocene rocks of Penghu Island, off of Taiwan. It appears to be related to two other fossil Asian tomistomines: Tomistoma petrolica of southeastern China and Toyotamaphimeia...
- †PepesuchusPepesuchusPepesuchus is an extinct genus of carnivorous metasuchian from the late Cretaceous period. It is a peirosaurid which lived during the Campanian and Maastrichtian stages of the Late Cretaceous in what is now state of São Paulo, Brazil.-Etymology:...
- Perosuchus — junior synonym of CaimanCaimanCaimans are alligatorid crocodylians within the subfamily Caimaninae. The group is one of two subfamilies of the family Alligatoridae, the other being alligators. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few...
- †Petrosuchus — chimeraChimera (paleontology)In paleontology, a chimera is a fossil which was reconstructed with elements coming from more than a single species of animal. A now classic example of chimera is Protoavis.-List of paleontological chimeras:*Brontosaurus*Lametasaurus...
of material from Goniopholis simusGoniopholisGoniopholis is an extinct genus of crocodyliform that lived in North America, Europe and Asia during the Late Jurassic and Early Cretaceous. Being semi-aquatic it is very similar to modern crocodiles...
(lower jaw) and Pholidosaurus purbeckensisPholidosaurusPholidosaurus is an extinct genus of neosuchian crocodylomorph. It is the type genus of the family Pholidosauridae. Fossils have been found from Germany and England. The genus is known to have existed during the Berriasian stage of the Early Cretaceous...
(cranium) - Philas — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †Phobosuchus — junior synonym of DeinosuchusDeinosuchusDeinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma , during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos , "terrible", and soukhos , "crocodile"...
- †PholidosaurusPholidosaurusPholidosaurus is an extinct genus of neosuchian crocodylomorph. It is the type genus of the family Pholidosauridae. Fossils have been found from Germany and England. The genus is known to have existed during the Berriasian stage of the Early Cretaceous...
- †PhosphatosaurusPhosphatosaurusPhosphatosaurus is an extinct genus of dyrosaurid crocodylomorph. It existed during the early Eocene, with fossils having been found from North Africa in Tunisia and Mali. Named in 1955, Phosphatosaurus is a monotypic genus; the type species is P. gavialoides...
- †PhyllodontosuchusPhyllodontosuchusPhyllodontosuchus is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin. It is known from a skull and jaws from Lower Jurassic rocks of Yunnan, China...
- †PhytosaurusPhytosaurusPhytosaurus is a dubious genus of phytosaur , and also the first phytosaur to be described, by G. Jaeger in 1828. It had a crocodile-like body structure, but its nostrils were on its forehead, not the tip of its snout...
- †PinacosuchusPinacosuchusPinacosuchus is an extinct genus of crocodylomorph. Its fossils were found in the Late Cretaceous-age North Horn Formation of Utah . Pinacosuchus was a diminutive crocodylomorph with spiky armor, and is known only from meagre remains....
- †PiscogavialisPiscogavialisPiscogavialis is an extinct genus of gryposuchine gavialid crocodylian. The only species yet known is P. jugaliperforatus. Fossils of Piscogavialis have been found from the Mio-Pliocene Pisco Formation of the Sacaco Basin in southern Peru...
- †PissarrachampsaPissarrachampsaPissarrachampsa is an extinct genus of baurusuchid mesoeucrocodylian from the Late Cretaceous of Brazil...
- †PlanocraniaPlanocraniaPlanocrania is an extinct genus of eusuchian crocodylian. Planocrania is included in the family Pristichampsidae along with the genus Pristichampsus. Both genera were previously assigned to the subfamily Pristichampsinae within the family Crocodylidae before they were placed in their own family,...
- †PlatyognathusPlatyognathusPlatyognathus is an extinct genus of protosuchian crocodylomorph. Fossils are known from the Early Jurassic Lower Lufeng Formation in Yunnan, China and belong to the type and only species, P. hsui.-Description:...
- †PlatysuchusPlatysuchusPlatysuchus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic . All specimens are known from Germany.- External links:*...
- †Plerodon — junior synonym of DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- †Plesiosuchus — junior synonym of DakosaurusDakosaurusDakosaurus is an extinct genus within the family Metriorhynchidae that lived during the Late Jurassic and Early Cretaceous. It was large, with teeth that were serrated and compressed lateromedially . The genus was established by Friedrich August von Quenstedt in 1856 for an isolated tooth named...
- †PliogonodonPliogonodonPliogonodon is an extinct genus of crocodylomorph. The type species, P. priscus, was named by Joseph Leidy in 1856. The holotype, known as USNM 7448, is a worn and broken tooth found from Phoebus Landing on the Cape Fear River in North Carolina. Although the age of the strata in which the tooth was...
— possible synonym of DeinosuchusDeinosuchusDeinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma , during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos , "terrible", and soukhos , "crocodile"... - †PolonosuchusPolonosuchusPolonosuchus is a genus of rauisuchian known from the late Triassic of Poland.It was described as Teratosaurus silesiacus in 2005 by Tomasz Sulej, and was transferred to the genus Polonosuchus by Brusatte et al. in 2009....
- †Polydectes — synonym of DeinosuchusDeinosuchusDeinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma , during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos , "terrible", and soukhos , "crocodile"...
- †PoposaurusPoposaurusPoposaurus is a genus of reptile from the Late Triassic of the southwestern United States. It was a crurotarsan archosaur which lived in what is now Wyoming, Utah, Arizona and Texas. The type species, Poposaurus gracilis, was described by M. G. Mehl in 1915. The second species, P...
- †PostosuchusPostosuchusPostosuchus, meaning "crocodile from Post ", was a basal archosaur that lived in what is now North America during the middle through to the late Triassic period...
- †PravusuchusPravusuchusPravusuchus is an extinct genus of phytosaur known from the late Triassic of Chinle Formation in Arizona. It was first named by Michelle R. Stocker in 2010 and the type species is Pravusuchus hortus....
- †PrestosuchusPrestosuchusPrestosuchus is an extinct genus of a group of rauisuchians called prestosuchids. Friedrich von Huene named the genus in honor of Vicentino Prestes de Almeida....
- †PristichampsusPristichampsusPristichampsus is an extinct genus of pristichampsid crocodylian that grew to approximately three metres in length....
- †ProcaimanoideaProcaimanoideaProcaimanoidea is an extinct genus of alligatorid from the Eocene of North America. It was named posthumously in 1946 by Charles W. Gilmore; the type species is P. utahensis, from the Uintan of Utah. It is based on USNM 15996, a nearly complete skull and partial left hind leg. A second species,...
- †ProcerosuchusProcerosuchusProcerosuchus is an extinct genus of rauisuchid rauisuchian. Fossils have been collected from the Late Triassic Santa Maria Formation in Geopark of Paleorrota, Rio Grande do Sul, Brazil, which is Carnian in age...
- †ProdiplocynodonProdiplocynodonProdiplocynodon is an extinct genus of basal crocodyloid crocodylian. It is the only crocodyloid known from the Cretaceous and existed during the Maastrichtian stage. The only species of Prodiplocynodon is the type species P...
- †Promystriosuchus— junior synonym of PaleorhinusPaleorhinusPaleorhinus was a genus of small phytosaur, a large order of semi-aquatic, crocodile-like animals that lived in the Late Triassic, specifically the earlier Late Carnian period. The reptiles lived throughout Europe, North America, and North Africa. This genus usually also includes the more...
- †ProtosuchusProtosuchusProtosuchus is an extinct genus of carnivorous crocodylomorph from the Early Jurassic. The name Protosuchus means "first crocodile", and is among the earliest animals that resemble crocodilians...
- †PseudhesperosuchusPseudhesperosuchusPseudhesperosuchus is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin...
- †PseudopalatusPseudopalatusPseudopalatus is an extinct genus of pseudopalatine phytosaur. It was assigned to Parasuchia in 2005. Specimens have been found from Arizona and New Mexico and are of Norian age...
- †Pterosuchus — lapsus calami of Petrosuchus
- †PurranisaurusPurranisaurusPurranisaurus is an extinct genus of marine crocodyliform from the Middle to Late Jurassic period of Chile and Argentina. Rusconi originally regarded Purranisaurus potens to be a plesiosaur; however, Gasparini demonstrated that it was in fact a metriorhynchid crocodyliform, and that may be a...
- †PurussaurusPurussaurusPurussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, 8 million years ago. It is known from skull material found in the Brazilian, Colombian and Peruvian Amazonia, and northern Venezuela. The estimated skull length for one large individual of the type...
- Pyrenodon — junior synonym of Tomistoma
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- †QianosuchusQianosuchusQianosuchus is an extinct genus of aquatic archosaur from the middle Triassic Guanling Formation of Pan County, China. It is represented by two nearly complete skeletons and a crushed skull.-External links:...
- †QuinkanaQuinkanaQuinkana is an extinct genus of mekosuchine crocodile that lived in Australia from ~24 million years ago to ~40,000 years ago. By the Pleistocene Quinkana had become one of the top terrestrial predators of Australia, possessing long legs and ziphodont teeth .Ziphodont teeth tend to arise in...
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- †RauisuchusRauisuchusRauisuchus was a basal archosaur which lived in what is now the Geopark of Paleorrota, Brazil, during the middle Triassic period . Named after fossil collector Dr. Wilhelm Rau, Rauisuchus belonged to a group of land-dwelling relatives to crocodiles...
- †RedondasaurusRedondasaurusRedondasaurus is a genus of phytosaur from the Late Triassic of North America. Translated, the name Redondasaurus means "Redonda lizard," referring to the Redonda Formation of east-central New Mexico, USA. It was first named by Hunt & Lucas in 1993, and contains one species, R. gregorii...
- †RedondasuchusRedondasuchusRedondasuchus is an extinct genus of aetosaur. It may a junior synonym of Typothorax coccinarum, another aetosaur. Redondasuchus is a member of the clade Typothoracisinae within the subfamily Aetosaurinae, and lived during the middle Norian stage of the Late Triassic. Material belonging to the...
— possible junior synonym of TypothoraxTypothoraxTypothorax is an extinct genus of aetosaur that lived in the Late Triassic. Its remains have been found in North America. Two species are known: T. coccinarum, the type species, and T. antiquum.-Description:... - †RedondavenatorRedondavenatorRedondavenator is a genus of sphenosuchian, a type of basal crocodylomorph, the clade that comprises the crocodilians and their closest kin. It is known from a partial upper jaw and left shoulder girdle found in rocks of the Norian-Rhaetian-age Upper Triassic Redonda Formation, northeastern New...
- †RevueltosaurusRevueltosaurusRevueltosaurus is a genus of prehistoric crurotarsan from Late Triassic New Mexico and Arizona.According to William Parker, who discovered the partial skeleton, "we have pretty much erased the record of Triassic ornithischian dinosaurs from North America, Europe and worldwide, except for South...
- †RhabdognathusRhabdognathusRhabdognathus is an extinct genus of dyrosaurid crocodylomorph. It is known from rocks dating to the Paleocene epoch from western Africa, and specimens dating back to the Maastrichtian era were identified in 2008. It was named by Swinton in 1930 for a lower jaw fragment from Nigeria. The type...
- †Rhabdosaurus — junior synonym of RhabdognathusRhabdognathusRhabdognathus is an extinct genus of dyrosaurid crocodylomorph. It is known from rocks dating to the Paleocene epoch from western Africa, and specimens dating back to the Maastrichtian era were identified in 2008. It was named by Swinton in 1930 for a lower jaw fragment from Nigeria. The type...
- †RhacheosaurusRhacheosaurusRhacheosaurus is an extinct genus of marine crocodyliform belonging to the family Metriorhynchidae. The genus was established by von Meyer in 1831 for skeletal remains from the Tithonian of Germany.-History and classification:...
— junior synonym of GeosaurusGeosaurusGeosaurus is an extinct genus of marine crocodyliform within the family Metriorhynchidae that lived during the Late Jurassic to the Early Cretaceous. Geosaurus was a carnivore that spent much, if not all, its life out at sea... - †RhadinosaurusRhadinosaurusRhadinosaurus is a genus of prehistoric reptile described in 1881 by Harry Govier Seeley, from remains found in Austria. The name means "slender lizard". It lived about 80 million years ago . The type species is R. alcinus.The fossil finds have been fragmentary...
— possible junior synonym of DoratodonDoratodonDoratodon is an extinct genus of crocodylomorph that was once believed to be a dinosaur.- Species :The type species is D. carcharidens from the Late Cretaceous of Austria, whilst the second known species is D. ibericus from the Late Cretaceous of Spain.-References:*Company, J., Suberbiola, X.P.,... - †RhamphosuchusRhamphosuchusRhamphosuchus is an extinct relative of the modern false gharial. It inhabited what is now the Indian sub-continent in the Miocene...
- Rhynchosuchus — junior synonym of Tomistoma
- †RileyasuchusRileyasuchusRileyasuchus is a genus of phytosaur from the Rhaetian of England. It has a confusing history, being associated with the taxonomy of Palaeosaurus and Thecodontosaurus, and being a replacement name for a preoccupied genus Rileyasuchus (meaning "Riley’s crocodile") is a genus of phytosaur from...
- †RimasuchusRimasuchusRimasuchus is an extinct genus of crocodile from the Neogene period of Africa and the Middle East. Its name comes from the Latin words rima, meaning "crack" and suchus, which means "crocodile"...
- †Rioarribasuchus — possible junior synonym of HeliocanthusHeliocanthusHeliocanthus is the name of a problematic genus of aetosaur that has undergone many taxonomic revisions in recent years, and may prove to be synonymous with Rioarribasuchus...
- †RiojasuchusRiojasuchusRiojasuchus is an extinct genus of quadrupedal crurotarsan archosaur. Riojasuchus is a member of Ornithosuchidae, a family of facultatively bipedal carnivores that were geographically widespread during the Late Triassic. Two other genera, Ornithosuchus and Venaticosuchus, are currently known....
- †RugosuchusRugosuchusRugosuchus is an extinct genus of neosuchian crocodyliform from the late Early Cretaceous of China. It is known from most of a skull, a partial postcranial skeleton, and a second partial skeleton including part of the hips. It was described by Wu and colleagues in 2001, with R...
- †RutiodonRutiodonRutiodon is an extinct genus of archosaur belonging to the family Phytosauridae. It lived during the Late Triassic period, and was about 10 to 25 feet in length...
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- †SaltoposuchusSaltoposuchusSaltoposuchus is an extinct genus of small , long- tailed crocodylomorph reptile , from the Norian of Europe. The name translated means "leaping crocodile". It has been proposed that Terrestrisuchus gracilis and Saltoposuchus connectens represent different ontogenetic stages of the same genus...
- †SajkanosuchusSajkanosuchusSajkanosuchus is an extinct genus of alligatorid crocodilian. It is known from the middle Eocene of eastern Kazakhstan. Fossils have been found from the Zaysan Basin in clays that are referred to as the Obayla suite. The type species is S. ckhikvadzoi, named in 1984....
- †SarcosuchusSarcosuchusSarcosuchus is an extinct genus of crocodyliform and distant relative of the crocodile that lived 112 million years ago. It dates from the early Cretaceous Period of what is now Africa and is one of the largest giant crocodile-like reptiles that ever lived...
- †Saurocainus — junior synonym of DiplocynodonDiplocynodonDiplocynodon is an extinct genus of alligatoroid that lived during the Paleocene to middle Miocene 49 million years ago in Europe. It looked very similar to the modern caiman in that it was small and had bony armour scutes covering its neck, back, belly, and tail...
- †SaurosuchusSaurosuchusSaurosuchus is an extinct genus of rauisuchian archosaur in the family Prestosuchidae. With a length of around 7 m , it was the largest rauisuchian, except perhaps for the less well known Fasolasuchus. Like other rauisuchians, Saurosuchus walked on four fully erect limbs...
- †ScythosuchusScythosuchusScythosuchus is an extinct genus of rauisuchid. Remains have been found from Olenekian-age Lower Triassic beds in Russia. The type and only species is S. basileus, described in 1999....
- †SebecusSebecusSebecus is an extinct genus of sebecid crocodylomorph from the Eocene of South America. Fossils have been found in Patagonia. Like other sebecosuchians, it was entirely terrestrial and carnivorous. The genus is currently represented by a single species, the type S. icaeorhinus...
- †Sebecosuchus — lapsus calami of SebecusSebecusSebecus is an extinct genus of sebecid crocodylomorph from the Eocene of South America. Fossils have been found in Patagonia. Like other sebecosuchians, it was entirely terrestrial and carnivorous. The genus is currently represented by a single species, the type S. icaeorhinus...
- †ShamosuchusShamosuchusShamosuchus is an extinct genus of neosuchian crocodile that lived during the Late Cretaceous period in what is now the Gobi desert of Mongolia, approximately 85 to 65 million years ago. The teeth were adapted to crush bivalves, gastropods and other animals with a shell or exoskeleton . The genus...
- †ShantungosuchusShantungosuchusShantungosuchus is an extinct genus of Cretaceous crocodyliform found in China. It includes three species: Shantungosuchus chuhsienensis, and S. brachycephalus, which were both described by Yang Zhongjian – usually referred to as "Young" – in 1961 and 1982, and S. hangjinensis, which...
- †ShartegosuchusShartegosuchusShartegosuchus is a genus of protosuchian-grade crocodylomorph. It is known primarily from PIN 4174/2, the partial deformed skull and jaws of a juvenile. This specimen was discovered in ancient lake deposits of the Tithonian-age Upper Jurassic Tsagaantsav Formation, southwestern Mongolia. ...
- †ShuvosaurusShuvosaurusShuvosaurus is a genus of beaked reptile from the Late Triassic of Texas. It was described by Sankar Chatterjee in 1993 after it was discovered by his son Shuvo. It was initially interpreted as a Triassic member of the Cretaceous dinosaur family Ornithomimidae...
- †SiamosuchusSiamosuchusSiamosuchus is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the pre-Aptian-age Lower Cretaceous Sao Khua Formation of eastern Thailand. It is known from a partial skull, most of the right half of the postcranial skeleton, and some bony scutes. Siamosuchus was...
- †SichuanosuchusSichuanosuchusSichuanosuchus is an extinct genus of crocodylomorph from the Late Jurassic and possibly Early Cretaceous of China.-References:* Chinese Fossil Vertebrates by Spencer G. Lucas...
- †SierritasuchusSierritasuchusSierritasuchus is an extinct genus of aetosaur in the subfamily Desmatosuchinae. It is known from a small holotype skeleton from the Late Triassic Tecovas Formation of Texas. This skeleton was discovered in 1939 and was originally assigned to the genus Desmatosuchus...
- †SillosuchusSillosuchusSillosuchus is a genus of poposaurid crurotarsans from the Late Triassic of Argentina.The generic name refers to Dr. William Sill, and "suchus", from Greek meaning crocodile. A reconstruction of the fossil was presented in 2008 by the National University of San Juan in Argentina, in an homage to Dr...
- †SimosuchusSimosuchusSimosuchus is an extinct genus of notosuchian crocodylomorphs from the Late Cretaceous of Madagascar. It is named for its unusually short skull. Fully grown individuals were about in length. The type species is S. clarki, found from the Maevarano Formation in Mahajanga Province.The teeth of S...
- †Simptosuchus — lapsus calami of SymptosuchusSymptosuchusSymptosuchus is an extinct genus of goniopholidid mesoeucrocodylian. It is known from the Late Cretaceous of Argentina. Argentine paleontologist Florentino Ameghino named the genus in 1899, along with the type species S. contortidens. It was formally described by Carlos Rusconi in 1934....
- †SinosaurusSinosaurusSinosaurus was a tetanuran theropod dinosaur which lived during the Late Triassic or Early Jurassic Period. Its fossils were found in the Lufeng Formation, in Yunnan Province, China. It was a bipedal carnivore...
— currently considered to be a theropodTheropodaTheropoda is both a suborder of bipedal saurischian dinosaurs, and a clade consisting of that suborder and its descendants . Dinosaurs belonging to the suborder theropoda were primarily carnivorous, although a number of theropod groups evolved herbivory, omnivory, and insectivory...
dinosaurDinosaurDinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of... - †SiquisiquesuchusSiquisiquesuchusSiquisiquesuchus is an extinct genus of gavialoid crocodilian...
- †SmilodonSmilodonSmilodon , often called a saber-toothed cat or saber-toothed tiger, is an extinct genus of machairodonts. This saber-toothed cat was endemic to North America and South America, living from near the beginning through the very end of the Pleistocene epoch .-Etymology:The nickname "saber-tooth" refers...
— preoccupied by a saber-tooth catMachairodontinaeMachairodontinae is an extinct carnivoran mammal subfamily of Felidae endemic to Asia, Africa, North America, South America, and Europe from the Miocene to Pleistocene living from c. 23 Ma until c...
, referred to ZanclodonZanclodonZanclodon is an extinct genus of archosaurian reptile endemic to what would have been Europe during the Middle Triassic-Late Triassic epochs .... - †SmilosuchusSmilosuchusSmilosuchus meaning "deadly-knife crocodile" is an extinct genus of phytosaur from the Late Triassic of North America. It was first described in 1995 as a replacement generic name for Leptosuchus gregorii...
- †Sokotosaurus — junior synonym of HyposaurusHyposaurusHyposaurus is a genus of extinct dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Maria Farinha Formation in Pernambuco, Brazil and Iullemmeden Basin in West Africa and Maastrichtian strata in New Jersey. It was related to Dyrosaurus....
- †SokotosuchusSokotosuchusSokotosuchus is an extinct genus of dyrosaurid crocodyliform which existed in Africa.-External links:* at the Paleobiology Database...
- †SphagesaurusSphagesaurusSphagesaurus is an extinct genus of notosuchian crocodylomorph from the Late Cretaceous of Brazil.-Species and discovery:The type species S. huenei, was discovered in 1950 by Price, with the both the genus and species named from two isolated teeth. More recently a nearly complete skull of S...
- †SphenosuchusSphenosuchusSphenosuchus is an extinct genus of sphenosuchian from the Elliot Formation of South Africa, discovered and described early in the 20th century. The skull is excellently preserved but other than elements of the forelimb and isolated parts of the hind limb, the Sphenosuchus material is incomplete...
- †SpinosuchusSpinosuchusSpinosuchus is a genus of extinct reptile of uncertain affinities, from the late Triassic of Texas. It has been assigned to a variety of groups over its history, from coelophysid dinosaur to pseudosuchian to uncertain theropod dinosaur to proterosuchid to possible trilophosaur...
- †SpondylosomaSpondylosomaSpondylosoma is a genus of archosaur of uncertain affinities from the late Ladinian-age Middle Triassic Lower Santa Maria Formation in Geopark of Paleorrota, Brazil. Recent studies have gone back and forth on its identity, suggesting rauisuchian or basal saurischian dinosaur...
- †StagonolepisStagonolepisStagonolepis is an extinct genus of aetosaur. It was about long.An aetosaur, Stagonolepis was a quadrupedal animal covered in thick armoured scales that ran down the length of the its body. A slow-moving browser, it would have used this heavy body armour to repel attacks from contemporary...
- †StagonosuchusStagonosuchusStagonosuchus is an extinct genus of rauisuchid rauisuchian. Fossils have been found from the Late Triassic Manda Formation in Tanzania that are Anisian in age....
- †StangerochampsaStangerochampsaStangerochampsa is an extinct genus of globidontan alligatoroid, possibly an alligatorine, from the Late Cretaceous of Alberta. It is based on RTMP.86.61.1, a skull, partial lower jaws, and partial postcranial skeleton discovered in the late Campanian–early Maastrichtian-age Horseshoe Canyon...
- †StegomosuchusStegomosuchusStegomosuchus is an extinct genus of small protosuchian crocodylomorph. It is known from a single incomplete specimen discovered in the late 19th century in Lower Jurassic rocks of south-central Massachusetts, United States...
- †Stegomus
- †SteneosaurusSteneosaurusSteneosaurus is an extinct genus of teleosaurid crocodyliform from the Early Jurassic to Early Cretaceous . Fossil specimens have been found in England, France, Germany, Switzerland and Morocco.-Species:...
- †Stenosaurus — referred by the author of the description to CricosaurusCricosaurusCricosaurus is an extinct genus of marine crocodyliform belonging to the family Metriorhynchidae. The genus was established by Johann Andreas Wagner in 1858 for three skulls from the Tithonian of Germany...
- †StolokrosuchusStolokrosuchusStolokrosuchus is an extinct genus of neosuchian crocodylomorph that lived during the Early Cretaceous. Its fossils, including a skull with a long thin snout and bony knobs on the prefontals, have been found in Niger. Stolokrosuchus was described in 2000 by Hans Larsson and Boubacar Gado. The...
- †Stomatosuchus
- †Stratiosuchus — lapsus calami of StratiotosuchusStratiotosuchusStratiotosuchus is an extinct genus of baurusuchid mesoeucrocodylian which existed in the Adamantina Formation, Brazil during the late Cretaceous period . It was first named by Campos, D.A., Suarez, J.M., Riff, D. and Kellner, A.W.A. in 2001 and the type species is Stratiotosuchus maxhechti...
- †StratiotosuchusStratiotosuchusStratiotosuchus is an extinct genus of baurusuchid mesoeucrocodylian which existed in the Adamantina Formation, Brazil during the late Cretaceous period . It was first named by Campos, D.A., Suarez, J.M., Riff, D. and Kellner, A.W.A. in 2001 and the type species is Stratiotosuchus maxhechti...
- †StrigosuchusStrigosuchusStrigosuchus is an extinct genus of crurotarsan from the Early Jurassic of China. Remains have been found from the Lower Lufeng Series in Yunnan. The genus was named by paleontologist D.J. Simmons in 1965 with the type species being S. licinus...
- †StromerosuchusStromerosuchusStromerosuchus is a dubious genus of Late Cretaceous crocodyliform. Fragmentary remains have been found from the Cenomanian-age Bahariya Formation of Egypt. The genus was named in 1936 by Oskar Kuhn. It is named in honor of Ernst Stromer, the German paleontologist who found the fossils in the...
- †SuchodusSuchodusSuchodus is an extinct genus of marine crocodyliform from the Middle to Late Jurassic period of England and France.-Taxonomy and phylogeny:Recent phylogenetic analysis has shown that Suchodus is a distinct metriorhynchid genus.-Valid species:...
- †SuchosaurusSuchosaurusSuchosaurus is as a spinosaurid theropod dinosaur from Cretaceous England, originally believed to be a genus of crocodile. The type material consists of teeth. Two species, S. cultridens and S. girardi have been named, though the S. girardi material was reclassified by Buffetaut as Baryonyx...
— probably at least in part a spinosaurid dinosaurDinosaurDinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of... - †SulcusuchusSulcusuchusSulcusuchus is a genus of polycotylid plesiosaur from the Late Cretaceous of Argentina....
— first described as a dyrosauridDyrosauridaeDyrosauridae is a family of extinct neosuchian crocodyliforms that lived from the Late Cretaceous to the Eocene. Fossils of this group have been found in almost every continent, specifically Africa, Asia, Europe, North America and South America....
, reidentified as a polycotylidPolycotylidaePolycotylidae is a family of plesiosaurs from the Cretaceous, a sister group to the Leptocleididae.With their short necks and large elongated heads, they resemble the pliosaurs, but closer phylogenetical studies indicate that they share many common features with the plesiosauridae and elasmosauridae...
plesiosaurPlesiosaurPlesiosauroidea is an extinct clade of carnivorous plesiosaur marine reptiles. Plesiosauroids, are known from the Jurassic and Cretaceous Periods... - †SunosuchusSunosuchusSunosuchus is an extinct genus of goniopholidid mesoeucrocodylian. Fossils are known from China, Kyrgyzstan and Thailand and are Jurassic in age, although some may be Early Cretaceous. Five species are currently assigned to the genus: the type species S. miaoi and the species S. junggarensis, S....
- †SusisuchusSusisuchusSusisuchus is an extinct genus of mesoeucrocodylian crocodyliform from the Early Cretaceous of Brazil. Fossils have been found from the Nova Olinda Member of the Aptian-age Crato Formation in the Araripe and Lima Campos Basins of northeastern Brazil...
- †SymptosuchusSymptosuchusSymptosuchus is an extinct genus of goniopholidid mesoeucrocodylian. It is known from the Late Cretaceous of Argentina. Argentine paleontologist Florentino Ameghino named the genus in 1899, along with the type species S. contortidens. It was formally described by Carlos Rusconi in 1934....
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- †TadzhikosuchusTadzhikosuchusTadzhikosuchus is an extinct genus of crocodylomorph that may have been a crocodylid eusuchian. To date it is mostly known from partial dentaries that show it to have been very similar to Diplocynodon, if not the same genus...
- †TagarosuchusTagarosuchusTagarosuchus is an extinct genus of Early Cretaceous protosuchian-grade crocodyliform. Fossils of Tagarosuchus have been found from southern Siberia, including a nearly complete skull found near the village of Shestakovo in Kemerovo Oblast. Tagarosuchus was named in 1999, with the type species...
- †TarjadiaTarjadiaTarjadia is an extinct genus of Triassic archosauriform. It is known from a single species, T. ruthae, first described in 1998 from the Middle Triassic Los Chañares Formation in Argentina. Partial remains have been found from deposits that are Anisian-Ladinian in age. The genus is known mostly from...
- †TecovasuchusTecovasuchusTecovasuchus is an extinct genus of aetosaur. It is known primarily from osteoderms found from the Tecovas Formation in Texas, which is Late Triassic in age, dating back to the upper Carnian. Material is also known from several other localities of the Chinle Group in New Mexico and Arizona...
- †TeleidosaurusTeleidosaurusTeleidosaurus is an extinct genus of carnivorous metriorhynchoid crocodyliform from Middle Jurassic deposits of Normandy, France...
- †"TeleocraterTeleocrater"Teleocrater" is the informal name given to an as yet undescribed genus of prehistoric reptile. It was an archosaur originally thought to be a dinosaur. The name "Teleocrater" was coined by English paleontologist Alan Charig in his 1956 doctoral dissertation, but has never been formally published...
" - †Teleorhinus — junior synonym of TerminonarisTerminonarisTerminonaris is a genus of extinct crocodilian reptiles that lived in the Late Cretaceous . Its remains are known from North America...
- †TeleosaurusTeleosaurusTeleosaurus was an extinct genus of teleosaurid crocodyliform that lived during the Middle Jurassic. It was approximately in length. Teleosaurus had highly elongate jaws, similar to those of a modern gharial. It had a long, slender, body, with a sinuous tail that would have helped propel it...
- †Temsacus — junior synonym of CrocodylusCrocodylusCrocodylus is one of three genera from the Crocodylinae subfamily extending from the Crocodylidae family.Established species include three extinct species:* † Crocodylus acer - probably represents a distinct genus....
- †TeratosaurusTeratosaurusTeratosaurus was a genus of rauisuchian known from the Triassic Stubensandstein of Germany...
- †TerminonarisTerminonarisTerminonaris is a genus of extinct crocodilian reptiles that lived in the Late Cretaceous . Its remains are known from North America...
- †TerrestrisuchusTerrestrisuchusTerrestrisuchus is an extinct genus of early crocodylomorph that was about 50 cm long. Fossils have been found in Wales and date from the Late Triassic....
- †ThecachampsaThecachampsaThecachampsa is an extinct genus of tomistomine crocodilian. Fossils have been found from the eastern United States in deposits that are late Oligocene in age. The type species is T. antiqua. Several other species have been erected. Those named in the 19th century were distinguished primarily by...
- †Thecachampsoides — junior synonym of EosuchusEosuchusEosuchus is an extinct genus of gavialoid crocodilian. It is among the most basal of all gavialoids, lying crownward of all other known members of the superfamily, including earlier members such as Thoracosaurus and Eothoracosaurus. Fossils have been found from France as well as eastern North...
- †TheriosuchusTheriosuchusTheriosuchus is an extinct genus of atoposaurid mesoeucrocodylian from the Late Jurassic of Europe, the Early Cretaceous of Asia and the Late Cretaceous of Romania. The five species are T. pusillus from England , T. ibericus from Spain , T. guimarotae from Portugal , T. sympiestodon from Romania...
- †ThoracosaurusThoracosaurusThoracosaurus is an extinct genus of gavialoid crocodilian which existed during the Late Cretaceous and early Paleocene. It contains the species Thoracosaurus neocesariensis in North America and Thoracosaurus macrorhynchus in Europe. A number of species have been referred to this genus, but most...
- †TicinosuchusTicinosuchusTicinosuchus is an extinct genus of rauisuchian archosaur from the Middle Triassic of Switzerland and Italy.Ticinosuchus was about long, and its whole body, even the belly, was covered in thick, armoured scutes. The structure of the hips shows that its legs were placed under the body almost...
- †TienosuchusTienosuchusTienosuchus is a dubious extinct genus of gavialoid crocodilian. It is known from a single tooth and some postcranial remains collected from Eocene deposits in Hunan, China. It is closely related to the genus Thoracosaurus, and has traditionally been placed in the subfamily Thoracosaurinae...
- †TikisuchusTikisuchusTikisuchus is an extinct genus of rauisuchid rauisuchian. It is known from the Late Triassic Tiki Formation in the Shahdol District of central India and was the first rauisuchid to have been found in Asia. The horizon from which remains have been found is Carnian in age. The type species is T....
- †TilemsisuchusTilemsisuchusTilemsisuchus is an extinct genus of dyrosaurid crocodyliform which existed in what is now Mali during the Eocene period. It was first named by Eric Buffetaut in 1979 and contains the species Tilemsisuchus lavocati.-External links:...
- TomistomaFalse gharialThe false gharial , also known as the Malayan gharial, false gavial, or Tomistoma is a freshwater crocodile of the Crocodylidae family with a very thin and elongated snout...
- †TorvoneustesTorvoneustesTorvoneustes is a genus of extinct metriorhynchid mesoeucrocodylian. It is known from a partial skull and some postcranial remains that have been found from the Kimmeridge Clay of Wiltshire, England. The skull was first to be found, and was first assigned to the species Metriorhynchus superciliosus...
- †ToyotamaphimeiaToyotamaphimeiaToyotamaphimeia is an extinct genus of tomistomine from the Pleistocene of Japan closely related to the false gharial, which lived 400.000 years ago. This relationship is reflected in the fact that it was originally described as a member of the same genus, Tomistoma....
- †TrematochampsaTrematochampsaTrematochampsa is an extinct genus of crocodyliform from the Late Cretaceous In Beceten Formation of Niger. The type species, T. taqueti, was described by Eric Buffetaut in 1974. A second species, T. oblita, was named from Madagascar in 1979...
- †TrialestesTrialestesTrialestes is an extinct genus of Late Triassic crocodylomorph that lived in South America. It has been classified as a dinosaur in the past due it being adapted as a terrestrial, running carnivore. It is classified in Sphenosuchia, which were early relatives of crocodilians.- External links :* at...
- †TrilophosuchusTrilophosuchusTrilophosuchus is an extinct genus of the crocodilian subfamily Mekosuchinae. Unlike living crocodilians, it is hypothesized to have been terrestrial. Trilophosuchus was approximately in length. It had a short skull with three ridges on top and large eyes. Fossils have been found at Riversleigh...
- †TsoabichiTsoabichiTsoabichi is an extinct genus of alligatoroid. Fossils are known from the Eocene Green River Formation in Wyoming, and date back to the Wasatchian. The genus was named and described in 2010, with the type species being T. greenriverensis...
- †TsylmosuchusTsylmosuchusTsylmosuchus is an extinct genus of rauisuchian that may be a member of the family Rauisuchidae. It is known from the southern Urals region of Russia. Tsylmosuchus occurred throughout the Olenekian age of the Early Triassic. Some of the strata from which Tsylmosuchus has been found are early...
- †TuranosuchusTuranosuchusTuranosuchus is an extinct genus of crocodyliform that may have been a goniopholidid mesoeucrocodylian. It is based on PIN 2229/507, a partial lower jaw consisting of the area where the two halves of the lower jaw meet . This specimen was found in rocks of the lower Santonian-age Upper...
- †TypothoraxTypothoraxTypothorax is an extinct genus of aetosaur that lived in the Late Triassic. Its remains have been found in North America. Two species are known: T. coccinarum, the type species, and T. antiquum.-Description:...
- †TzaganosuchusTzaganosuchusTzaganosuchus is an extinct genus of fossil crocodile from the Gobi Desert of southern/southeastern Mongolia. The type and only known species for this genus, Tzaganosuchus infansis was discovered during a joint paleontological expedition conducted by the Soviet Union and Mongolia...
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- †UberabasuchusUberabasuchusUberabasuchus is an extinct genus of crocodylomorph from the Late Cretaceous of Brazil.-Sources:* - original description of genus...
- †UnasuchusUnasuchusUnasuchus is an extinct genus of Early Cretaceous crocodyliform. The genus is named after Uña, a municipality in central Spain where fossils have been found. Unasuchus is known only from skull and jaw fragments, making its classification uncertain. These remains have been found from the Barremian...
- †UruguaysuchusUruguaysuchusUruguaysuchus is an extinct genus of crocodylomorph from the Late Cretaceous of Uruguay. It was related to Simosuchus and Malawisuchus.-Sources:* A Pictorial Guide to Fossils by Gerard Ramon Case...
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- †VectisuchusVectisuchusVectisuchus is a genus of goniopholidid mesoeucrocodylian, known from the Early Cretaceous-age Wealden Group of the Isle of Wight, England. It was a small, piscivorous crocodylomorph with a narrow, elongate snout, and relatively long forearms. The type specimen, SMNS 50984, was found in 1977...
- †VenaticosuchusVenaticosuchusVenaticosuchus is a genus of Late Triassic quadrupedal crurotarsan archosaur. Originally it was thought to be the ancestor to the carnosaur dinosaurs ; however, now it is known to be more closely related to crocodilians than dinosaurs...
- †VjushkovisaurusVjushkovisaurusVjushkovisaurus is an extinct genus of Early Triassic rauisuchid. It is known from Sol-Iletsk in Orenburg Oblast, Russia, in strata that are Anisian in age. The genus was named in 1982, with the type species being V. berdjanensis...
- †VoayVoayVoay is an extinct genus of crocodylid crocodilian. Numerous subfossils have been found from Madagascar, including complete skulls as well as vertebrae and osteoderms from such places as Ambolisatra and Antsirabe. The genus is thought to have become extinct relatively recently during the Holocene...
- †VoliaVoliaVolia was an extinct genus of Fiji mekosuchine crocodylian. It was around 2–3 meters long. Nowithstanding its small size, it should have been the greatest predator of the Pleistocene ecosystems of Fiji....
- †VytshegdosuchusVytshegdosuchusVytshegdosuchus is a genus of rauisuchid archosaur. It is known from fossil bones discovered from three localities along the Vychegda River in the Komi Republic of the European section of Russia. These fossils were found in rocks of the upper Yarenskian Gorizont, dating to the late Olenekian stage...
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- †WannaganosuchusWannaganosuchusWannaganosuchus is an extinct genus of small alligatorid...
- †WanosuchusWanosuchusWanosuchus is an extinct genus of sebecosuchian mesoeucrocodylian known from ?Paleocene-age rocks of southern Anhui, China. It is based on IVPP V 6262, a nearly complete lower jaw, which is also the only known specimen. The bone lacks an external mandibular fenestra and has thirteen...
- †WargosuchusWargosuchusWargosuchus is an extinct genus of baurusuchid mesoeucrocodylian from the Late Cretaceous of Argentina...
- †Weigeltisuchus — junior synonym of PristichampsusPristichampsusPristichampsus is an extinct genus of pristichampsid crocodylian that grew to approximately three metres in length....
- †WoodbinesuchusWoodbinesuchusWoodbinesuchus is a genus of goniopholidid mesoeucrocodylian. Its fossils have been recovered from the Cenomanian-age Upper Cretaceous Woodbine Formation of Texas. Crocodyliform fossils are widespread in the formation. The type specimen of Woodbinesuchus, SMU 74626, came from near the base...
- †Wurnosaurus — junior synonym of HyposaurusHyposaurusHyposaurus is a genus of extinct dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Maria Farinha Formation in Pernambuco, Brazil and Iullemmeden Basin in West Africa and Maastrichtian strata in New Jersey. It was related to Dyrosaurus....
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- †Xenosuchus — junior synonym of CaimanCaiman (genus)Caimans are alligatorid crocodylians within the subfamily Caimaninae. Caimans inhabit Central and South America. They are relatively small crocodilians, with most species reaching lengths of only a few meters, although one species, the Black caiman, can exceed in length.-Brain:In Caiman the dura...
- †XilousuchusXilousuchusXilousuchus is an extinct genus of poposauroid from lower Triassic deposits of Fugu County of northeastern Shanxi Province, China. It is known from the holotype, IVPP V 6026, a single well-preserved partial skeleton including the skull. It was found from the Heshanggou Formation of the...
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- †YacareraniYacareraniYacarerani is an extinct genus of Late Cretaceous notosuchian crocodylomorph. Fossils have been found in 2002 from central Bolivia in Amboró National Park and are Turonian-Santonian in age. The genus was recently described in 2009 in the Journal of Vertebrate Paleontology...
- †YarasuchusYarasuchusYarasuchus is an extinct genus of rauisuchian, a group of predatory and large Triassic archosaurs. It lived during the Anisian stage of the Middle Triassic of India. Being only 2 metres long, is was one of the smallest rauisuchians known...
- †YoungosuchusYoungosuchusYoungosuchus is an extinct genus of archosauriform from the Middle Triassic of China. The type species is Y. sinensis. Y. sinensis was first described in 1973 as a new species of the erythrosuchid Vjushkovia. In 1985, it was reassigned as its own genus of rauisuchid...
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- †ZanclodonZanclodonZanclodon is an extinct genus of archosaurian reptile endemic to what would have been Europe during the Middle Triassic-Late Triassic epochs ....
— in part referred to MegalosaurusMegalosaurusMegalosaurus is a genus of large meat-eating theropod dinosaurs of the Middle Jurassic period of Europe... - †ZaraasuchusZaraasuchusZaraasuchus was a gobiosuchid crocodyliform described in 2004 by Diego Pol and Mark Norell. It was found in the Red Beds of Zos Canyon, in the Gobi Desert of Mongolia, thus making it Late Cretaceous in age....
- †ZholsuchusZholsuchusZholsuchus is a genus of crocodyliform that may have been a goniopholidid mesoeucrocodylian, but is only known from scanty material . This specimen was found in the Coniacian-age Upper Cretaceous Bissekty Formation of Dzharakhuduk, Uzbekistan. Zholsuchus was described in 1989 by Lev Nesov and...
- †ZhyrasuchusZhyrasuchusZhyrasuchus is an extinct genus of crocodylomorph that may have been a crocodylid eusuchian, but is only known from scanty material including a frontal . Its fossils were found in the Coniacian-age Upper Cretaceous Bissekty Formation of Dzharakhuduk, Uzbekistan. Zhyrasuchus was described in 1989...
- †ZosuchusZosuchusZosuchus is a genus of basal, Late Cretaceous crocodyliform from the Redbeds of Zos Canyon in the Gobi Desert of Mongolia. It was discovered by expeditions organized by the American Museum of Natural History, and described by palaeontologists Diego Pol and Mark Norell.The type species is Z...
- †ZulmasuchusZulmasuchusZulmasuchus is an extinct genus of bretesuchid sebecosuchian mesoeucrocodylian. Its fossils have been found in Paleocene-age rocks of the Santa Lucia Formation in Bolivia. Zulmasuchus was named in 2007 by Alfredo Paolillo and Omar Linares for fossils originally described by Buffetaut and...