List of North American dinosaurs
Encyclopedia
This is a list of dinosaur
s whose remains have been recovered from North America
. North America has a rich dinosaur fossil record with great diversity of dinosaurs. This may not mean the dinosaurs were more diverse or abundant; it may be simply because substantial resources have been devoted to the North American fossil record.
During the Triassic
period, dinosaurs such as Coelophysis
, Chindesaurus
, Gojirasaurus
, and Tawa
lived in North America. Fossils of Tawa have also been found in South America
, which has important indications about paleogeography. During the Early Jurassic Period
, dinosaurs such as Dilophosaurus
, Anchisaurus
, Ammosaurus
, Syntarsus
, and the early thyreophoran Scutellosaurus
lived in North America. The latter is believed to have been the ancestor of all stegosaurs and ankylosaurs. The Middle Jurassic
is the only poorly represented time period in North America, although several Middle Jurassic localities are known from Mexico. Footprints, eggshells, teeth, and fragments of bone representing theropods, sauropods, and ornithopods have been found, but none of them are diagnostic to the genus
level.
The Late Jurassic
of North America, however, is the exact opposite of the Middle Jurassic. The Late Jurassic Morrison Formation
is found in several U.S. states, including Colorado
, Utah
, Wyoming
, Montana
, New Mexico
, Oklahoma
, South Dakota
, and Texas
. It is notable as being the most fertile single source of dinosaur fossils in the world. The roster of dinosaurs from the Morrison is impressive. Among the theropods, Allosaurus
, Saurophaganax
, Torvosaurus
, Ceratosaurus
, Coelurus
, Ornitholestes
, Tanycolagreus
, Stokesosaurus
, and Marshosaurus
are found in the Morrison. An abundance of sauropods has been found there, including Apatosaurus
, Diplodocus
, Barosaurus
, Brachiosaurus
, Camarasaurus
, and Amphicoelias
, which is possibly the largest known dinosaur ever to exist. Two genera of stegosaurs, Stegosaurus
and Hesperosaurus
, have been found there. Finally, ornithopods found in the Morrison include Dryosaurus
, Camptosaurus
, Drinker
, Othnielia
, and Othnielosaurus
.
During the Early Cretaceous
, new dinosaurs evolved to replace the old ones. Sauropods were still present, but they were not as diverse as they were in the Jurassic Period. Theropods from the Early Cretaceous of North America include dromaeosaurids such as Deinonychus
and Utahraptor
, Acrocanthosaurus
, and Microvenator
. Sauropods included Astrodon
, Pleurocoelus, and Sauroposeidon
. Ornithischians were more diverse than they were in the Jurassic Period. Tenontosaurus
, Hypsilophodon
, Iguanodon
, Protohadros
, and Eolambia
are some of the ornithopods that lived during this time period. Ankylosaurs replaced their stegosaur cousins in the Cretaceous. Ankylosaurs from the Early Cretaceous of North America include Sauropelta
and Gastonia
. Therizinosaurs such as Falcarius
are also known from the Early Cretaceous of North America.
Finally, the Late Cretaceous
Period, the greatest abundance and diversity of dinosaurs of all time lived in North America. During the early part of the Late Cretaceous, the therizinosaur Nothronychus
and the ceratopsian Zuniceratops
lived. During the Campanian
stage of the Late Cretaceous, an enormous diversity of dinosaurs is known. Theropods included the tyrannosaurs Albertosaurus
, Gorgosaurus
, Daspletosaurus
, Appalachiosaurus
, and Dryptosaurus
, and the dromaeosaurids Dromaeosaurus
, Saurornitholestes
, Atrociraptor
, and Bambiraptor
. Ceratopsians, such as Pachyrhinosaurus
, Styracosaurus
, Centrosaurus
Monoclonius
, Brachyceratops
, Pentaceratops
, and Leptoceratops
also existed. Among hadrosaurs, Parasaurolophus
, Corythosaurus
, Lambeosaurus
, Saurolophus
, and Prosaurolophus
existed. During the latest Cretaceous, the Maastrichtian
stage, the diversity of dinosaurs wasn't as great as the preceding Campanian stage. North American herbivorous dinosaurs from this time period include the titanosaur
sauropod Alamosaurus
, the ceratopsians Triceratops
and Torosaurus
, the pachycephalosaurs Pachycephalosaurus
, Stygimoloch
, Dracorex
, and Stegoceras
, the hadrosaurs Edmontosaurus
and Anatotitan
. Predatory dinosaurs from this time period icluded the tyrannosaurids Tyrannosaurus
and Nanotyrannus
(which may just be a juvenile of the former), and the troodontid Troodon
.
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 whose remains have been recovered from North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
. North America has a rich dinosaur fossil record with great diversity of dinosaurs. This may not mean the dinosaurs were more diverse or abundant; it may be simply because substantial resources have been devoted to the North American fossil record.
During the Triassic
Triassic
The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events...
period, dinosaurs such as Coelophysis
Coelophysis
Coelophysis , meaning "hollow form" in reference to its hollow bones , is one of the earliest known genera of dinosaur...
, Chindesaurus
Chindesaurus
Chindesaurus is a genus of saurischian dinosaur named after Chinde Point , near where the genoholotype specimen was discovered in the Chinle Formation of Petrified Forest National Park, Arizona, by Bryan Small in 1985...
, Gojirasaurus
Gojirasaurus
Gojirasaurus is a dubious genus of dinosaur named after the giant monster movie character Gojira . It was discovered in the Bull Canyon Formation...
, and Tawa
Tawa (dinosaur)
Tawa is a genus of theropod dinosaur from the Late Triassic period. It is estimated to have been 2 m long...
lived in North America. Fossils of Tawa have also been found in South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...
, which has important indications about paleogeography. During the Early Jurassic Period
Early Jurassic
The Early Jurassic epoch is the earliest of three epochs of the Jurassic period...
, dinosaurs such as Dilophosaurus
Dilophosaurus
Dilophosaurus was a theropod dinosaur from the Sinemurian stage of the Early Jurassic Period, about 193 million years ago. The first specimens were described in 1954, but it was not until over a decade later that the genus received its current name...
, Anchisaurus
Anchisaurus
Anchisaurus is a genus of basal sauropodomorph, and was an early herbivorous dinosaur. Until recently it was classed as a member of Prosauropoda. The name comes from the Greek αγχι/agkhi...
, Ammosaurus
Ammosaurus
Ammosaurus is a genus of sauropodomorph dinosaur from the Early and Middle Jurassic Period of North America. At 4 meters in length, it was small compared to some other members of its suborder, which included the largest animals ever to walk the Earth...
, Syntarsus
Megapnosaurus
Megapnosaurus was a dinosaur of the theropod family Coelophysidae, formerly called Syntarsus , living during the Early Jurassic. It was renamed by American entomologist Dr. Michael Ivie , Polish Australian Dr...
, and the early thyreophoran Scutellosaurus
Scutellosaurus
Scutellosaurus is a genus of herbivorous dinosaur that lived in North America around 200 to 196 million years ago, in the Early Jurassic times....
lived in North America. The latter is believed to have been the ancestor of all stegosaurs and ankylosaurs. The Middle Jurassic
Middle Jurassic
The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from 176-161 million years ago. In European lithostratigraphy, rocks of this Middle Jurassic age are called the Dogger....
is the only poorly represented time period in North America, although several Middle Jurassic localities are known from Mexico. Footprints, eggshells, teeth, and fragments of bone representing theropods, sauropods, and ornithopods have been found, but none of them are diagnostic to the genus
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...
level.
The Late Jurassic
Late Jurassic
The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 161.2 ± 4.0 to 145.5 ± 4.0 million years ago , which is preserved in Upper Jurassic strata. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age...
of North America, however, is the exact opposite of the Middle Jurassic. The Late Jurassic Morrison Formation
Morrison Formation
The Morrison Formation is a distinctive sequence of Late Jurassic sedimentary rock that is found in the western United States, which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone and limestone and is light grey, greenish...
is found in several U.S. states, including Colorado
Colorado
Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...
, Utah
Utah
Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...
, Wyoming
Wyoming
Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...
, Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...
, New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...
, Oklahoma
Oklahoma
Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...
, South Dakota
South Dakota
South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. Once a part of Dakota Territory, South Dakota became a state on November 2, 1889. The state has an area of and an estimated population of just over...
, and Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...
. It is notable as being the most fertile single source of dinosaur fossils in the world. The roster of dinosaurs from the Morrison is impressive. Among the theropods, Allosaurus
Allosaurus
Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period . The name Allosaurus means "different lizard". It is derived from the Greek /allos and /sauros...
, Saurophaganax
Saurophaganax
Saurophaganax is a genus of allosaurid dinosaur from the Morrison Formation of Late Jurassic Oklahoma . Some paleontologists consider it to be a species of Allosaurus...
, Torvosaurus
Torvosaurus
Torvosaurus is a genus of large theropod dinosaur that lived during the Late Jurassic period...
, Ceratosaurus
Ceratosaurus
Ceratosaurus meaning "horned lizard", in reference to the horn on its nose , was a large predatory theropod dinosaur from the Late Jurassic Period , found in the Morrison Formation of North America, in Tanzania and Portugal...
, Coelurus
Coelurus
Coelurus is a genus of coelurosaur dinosaur from the Late Jurassic period . The name means "hollow tail", referring to its hollow tail vertebrae...
, Ornitholestes
Ornitholestes
Ornitholestes was a small theropod dinosaur of the late Jurassic of Western Laurasia . To date, it is known only from a single partial skeleton, and badly crushed skull found at the Bone Cabin Quarry near Medicine Bow, Wyoming, in 1900...
, Tanycolagreus
Tanycolagreus
Tanycolagreus is a genus of coelurid theropod from the Late Jurassic of North America. The holotype is a partial skeleton recovered from the Bone Cabin Quarry West locality, Albany County, Wyoming, from the Morrison Formation...
, Stokesosaurus
Stokesosaurus
Stokesosaurus is a genus of small , early tyrannosaur from the Late Jurassic period of Utah and England. It was named after Utah geologist William Lee Stokes...
, and Marshosaurus
Marshosaurus
Marshosaurus was a genus of medium sized theropod, with a size up to 5 or 6 meters in length and a skull about 60 cm long. It is known from parts of at least three individuals from the Morrison Formation of Utah and Colorado.The holotype is a left ilium, or upper pelvis bone found at the...
are found in the Morrison. An abundance of sauropods has been found there, including Apatosaurus
Apatosaurus
Apatosaurus , also known by the popular but scientifically deprecated synonym Brontosaurus, is a genus of sauropod dinosaur that lived from about 154 to 150 million years ago, during the Jurassic Period . It was one of the largest land animals that ever existed, with an average length of and a...
, Diplodocus
Diplodocus
Diplodocus , or )is a genus of diplodocid sauropod dinosaur whose fossils were first discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a Neo-Latin term derived from Greek "double" and "beam", in reference to its double-beamed chevron bones...
, Barosaurus
Barosaurus
Barosaurus ; Greek barys/βαρυς meaning 'heavy' and saurus/σαυρος meaning 'lizard', 'heavy lizard') was a giant, long-tailed, long-necked, plant-eating dinosaur closely related to the more familiar Diplodocus...
, Brachiosaurus
Brachiosaurus
Brachiosaurus is a genus of sauropod dinosaur from the Jurassic Morrison Formation of North America. It was first described by Elmer S. Riggs in 1903 from fossils found in the Grand River Canyon of western Colorado, in the United States. Riggs named the dinosaur Brachiosaurus altithorax,...
, Camarasaurus
Camarasaurus
Camarasaurus meaning 'chambered lizard', referring to the hollow chambers in its vertebrae was a genus of quadrupedal, herbivorous dinosaurs. It was the most common of the giant sauropods to be found in North America...
, and Amphicoelias
Amphicoelias
Amphicoelias is a genus of herbivorous sauropod dinosaur that includes what may be the largest dinosaur ever discovered, A. fragillimus. Based on surviving descriptions of a single fossil bone, A. fragillimus may have been the longest known vertebrate at in length, and may have had a mass of up...
, which is possibly the largest known dinosaur ever to exist. Two genera of stegosaurs, Stegosaurus
Stegosaurus
Stegosaurus is a genus of armored stegosaurid dinosaur. They lived during the Late Jurassic period , some 155 to 150 million years ago in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well...
and Hesperosaurus
Hesperosaurus
Hesperosaurus was a herbivorous dinosaur from the Kimmeridgian to Tithonian epochs of the Jurassic period , whose fossils are found in the state of Wyoming in the United States of America...
, have been found there. Finally, ornithopods found in the Morrison include Dryosaurus
Dryosaurus
Dryosaurus is a genus of an ornithopod dinosaur that lived in the Late Jurassic period. It was an iguanodont . Fossils have been found in the western United States, and were first discovered in the late 19th century...
, Camptosaurus
Camptosaurus
Camptosaurus is a genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic period of western North America. The name means 'flexible lizard', ....
, Drinker
Drinker
Drinker was a genus of hypsilophodont dinosaur from the late Jurassic period of North America. Although based on good remains, it remains obscure due to a lack of post-naming publications.-Description:...
, Othnielia
Othnielia
Othnielia is a genus of ornithischian dinosaur, named after its original describer, Professor Othniel Charles Marsh, an American paleontologist of the 19th century...
, and Othnielosaurus
Othnielosaurus
Othnielosaurus is a genus of ornithischian dinosaur that lived about 155 to 148 million years ago, during the Late Jurassic-age Morrison Formation of the western United States. It is named in honor of famed paleontologist Othniel Charles Marsh, and was formerly assigned to the genus...
.
During the Early Cretaceous
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...
, new dinosaurs evolved to replace the old ones. Sauropods were still present, but they were not as diverse as they were in the Jurassic Period. Theropods from the Early Cretaceous of North America include dromaeosaurids such as Deinonychus
Deinonychus
Deinonychus was a genus of carnivorous dromaeosaurid dinosaur. There is one described species, Deinonychus antirrhopus. This 3.4 meter long dinosaur lived during the early Cretaceous Period, about 115–108 million years ago . Fossils have been recovered from the U.S...
and Utahraptor
Utahraptor
Utahraptor is a genus of theropod dinosaurs, including the largest known members of the family Dromaeosauridae. Fossil specimens date to the upper Barremian stage of the early Cretaceous period...
, Acrocanthosaurus
Acrocanthosaurus
Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found mainly in the U.S...
, and Microvenator
Microvenator
Microvenator is a genus of dinosaur from the Early Cretaceous Cloverly Formation in what is now south central Montana. Microvenator was an oviraptorosaurian theropod. The holotype fossil is an incomplete skeleton, most likely a juvenile, with a living length of about four feet. The adult size of...
. Sauropods included Astrodon
Astrodon
Astrodon was a genus of large herbivorous sauropod dinosaur, related to Brachiosaurus, that lived in what is now the eastern United States during the Early Cretaceous period. Its fossils have been found in the Arundel Formation, which has been dated through palynomorphs to the Aptian-Albian...
, Pleurocoelus, and Sauroposeidon
Sauroposeidon
Sauroposeidon is a genus of sauropod dinosaur known from four neck vertebrae that were found in the southeastern portion of the US state of Oklahoma. The fossils were found in rocks dating to the Early Cretaceous, a period when the sauropods of North America had diminished in both size and...
. Ornithischians were more diverse than they were in the Jurassic Period. Tenontosaurus
Tenontosaurus
Tenontosaurus is a genus of medium- to large-sized ornithopod dinosaur. The genus is known from the late Aptian to Albian ages of the middle Cretaceous period sediments of western North America, dating between 115 to 108 million years ago...
, Hypsilophodon
Hypsilophodon
Hypsilophodon is an ornithopod dinosaur genus from the Early Cretaceous period of Europe. It was a small bipedal animal with an herbivorous or possibly omnivorous diet...
, Iguanodon
Iguanodon
Iguanodon is a genus of ornithopod dinosaur that lived roughly halfway between the first of the swift bipedal hypsilophodontids and the ornithopods' culmination in the duck-billed dinosaurs...
, Protohadros
Protohadros
Protohadros is a genus of herbivorous ornithischian dinosaur from the Late Cretaceous , 95 million years ago....
, and Eolambia
Eolambia
Eolambia is a genus of herbivorous iguanodontian dinosaur from the mid-Cretaceous Period of the USA.In 1992 Carole Jones and her husband Ramal Jones near Castle Dale in Emery County, Utah, on the San Rafael Swell Anticline discovered a fossil site which would be named the Carol Quarry in her honour...
are some of the ornithopods that lived during this time period. Ankylosaurs replaced their stegosaur cousins in the Cretaceous. Ankylosaurs from the Early Cretaceous of North America include Sauropelta
Sauropelta
Sauropelta is a genus of nodosaurid dinosaur that existed in the Early Cretaceous Period of North America. One species has been named although others may have existed. Anatomically, Sauropelta is one of the most well-understood nodosaurids, with fossilized remains recovered in the U.S. states of...
and Gastonia
Gastonia
Gastonia may refer to:Places:*Gastonia, North Carolina, United StatesIn biology:*Gastonia , a genus in the ivy or ginseng family*Gastonia , a genus of ankylosaur...
. Therizinosaurs such as Falcarius
Falcarius
Falcarius is a genus of therizinosaurian dinosaur found in east-central Utah, United States. Its name is derived from the word sickle , which scientists have used to describe its unwieldy clawed hands...
are also known from the Early Cretaceous of North America.
Finally, the Late Cretaceous
Late Cretaceous
The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...
Period, the greatest abundance and diversity of dinosaurs of all time lived in North America. During the early part of the Late Cretaceous, the therizinosaur Nothronychus
Nothronychus
Nothronychus is a genus of theropod dinosaur classified in the group Therizinosauria, from the Cretaceous of North America.The type species of this dinosaur, Nothronychus mckinleyi, was described by James Kirkland and Douglas G. Wolfe in 2001...
and the ceratopsian Zuniceratops
Zuniceratops
Zuniceratops was a ceratopsian dinosaur from the mid Turonian of the Late Cretaceous Period of what is now New Mexico, United States...
lived. During the Campanian
Campanian
The Campanian is, in the ICS' geologic timescale, the fifth of six ages of the Late Cretaceous epoch . The Campanian spans the time from 83.5 ± 0.7 Ma to 70.6 ± 0.6 Ma ...
stage of the Late Cretaceous, an enormous diversity of dinosaurs is known. Theropods included the tyrannosaurs Albertosaurus
Albertosaurus
Albertosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, more than 70 million years ago. The type species, A. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which...
, Gorgosaurus
Gorgosaurus
Gorgosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, between about 76.5 and 75 million years ago. Fossil remains have been found in the Canadian province of Alberta and possibly the U.S. state of Montana....
, Daspletosaurus
Daspletosaurus
Daspletosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America between 77 and 74 million years ago, during the Late Cretaceous Period. Fossils of the only named species were found in Alberta, although other possible species from Alberta and Montana await...
, Appalachiosaurus
Appalachiosaurus
Appalachiosaurus is a genus of tyrannosauroid theropod dinosaur from the Late Cretaceous Period of eastern North America. Like almost all theropods, it was a bipedal predator. Only a juvenile skeleton has been found, representing an animal over 7 meters long and weighing over...
, and Dryptosaurus
Dryptosaurus
Dryptosaurus was a genus of primitive tyrannosaur that lived in Eastern North America during the middle Maastrichtian stage of the Late Cretaceous period. Although largely unknown now outside of academic circles, a famous painting of the genus by Charles R...
, and the dromaeosaurids Dromaeosaurus
Dromaeosaurus
Dromaeosaurus was a genus of theropod dinosaur which lived during the Late Cretaceous period , sometime between 76.5 and 74.8 million years ago, in the western United States and Alberta, Canada. The name means 'running lizard'....
, Saurornitholestes
Saurornitholestes
Saurornitholestes is a genus of carnivorous dromaeosaurid theropod dinosaur from the late Cretaceous of Alberta, Montana and New Mexico....
, Atrociraptor
Atrociraptor
Atrociraptor is a genus of dromaeosaurid theropod dinosaur from the Late Cretaceous of Alberta, Canada....
, and Bambiraptor
Bambiraptor
Bambiraptor is a Late Cretaceous, 75 million year old, bird-like dromaeosaurid theropod dinosaur described by scientists at the University of Kansas, Yale University, and the University of New Orleans....
. Ceratopsians, such as Pachyrhinosaurus
Pachyrhinosaurus
Pachyrhinosaurus is a genus of ceratopsid dinosaurs from the Late Cretaceous period of North America. The first examples were discovered by Charles M. Sternberg in Alberta, Canada, in 1946, and named in 1950. Over a dozen partial skulls and a large assortment of other fossils from various species...
, Styracosaurus
Styracosaurus
Styracosaurus was a genus of herbivorous ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago...
, Centrosaurus
Centrosaurus
Centrosaurus is a genus of herbivorous ceratopsian dinosaurs from the late Cretaceous of Canada. Their remains have been found in the Dinosaur Park Formation and uppermost Oldman Formation, dating from 76.5 to 75.5 million years ago....
Monoclonius
Monoclonius
Monoclonius was a ceratopsian dinosaur from the Judith River Formation of Late Cretaceous Montana and Canada. It is often confused with Centrosaurus, a similar genus of ceratopsian . Monoclonius was described by Edward Drinker Cope in 1876...
, Brachyceratops
Brachyceratops
Brachyceratops is a dubious genus of ceratopsian dinosaur known only from partial juvenile specimens dating to the late Cretaceous Period of Montana, United States....
, Pentaceratops
Pentaceratops
Pentaceratops is a genus of ceratopsid dinosaur from the late Cretaceous Period of what is now North America. The appearance of Pentaceratops sternbergii in the fossil record marks the end of the Judithian land vertebrate age and the start of the Kirtlandian...
, and Leptoceratops
Leptoceratops
Leptoceratops , was a primitive ceratopsian dinosaur genus from the Late Cretaceous Period of what is now Western North America, at the same time as its giant...
also existed. Among hadrosaurs, Parasaurolophus
Parasaurolophus
Parasaurolophus is a genus of ornithopod dinosaur that lived in what is now North America during the Late Cretaceous Period, about 76.5–73 million years ago. It was an herbivore that walked both as a biped and a quadruped. Three species are recognized: P. walkeri , P. tubicen, and the...
, Corythosaurus
Corythosaurus
Corythosaurus is a genus of duck-billed dinosaur from the Upper Cretaceous Period, about 77-76.5 million years ago. It lived in what is now North America...
, Lambeosaurus
Lambeosaurus
Lambeosaurus is a genus of hadrosaurid dinosaur that lived about 76 to 75 million years ago, in the Late Cretaceous Period of North America. This bipedal/quadrupedal, herbivorous dinosaur is known for its distinctive hollow cranial crest, which in the best-known species resembled a hatchet...
, Saurolophus
Saurolophus
Saurolophus is a genus of large hadrosaurine duckbill that lived about 69.5-68.5 million years ago, in the Late Cretaceous of North America and Asia; it is one of the few genera of dinosaurs known from multiple continents. It is distinguished by a spike-like crest which projects up and back...
, and Prosaurolophus
Prosaurolophus
Prosaurolophus is a genus of hadrosaurid dinosaur from the Late Cretaceous of North America. It is known from the remains of at least 25 individuals belonging to two species, including skulls and skeletons, but it remains obscure...
existed. During the latest Cretaceous, the Maastrichtian
Maastrichtian
The Maastrichtian is, in the ICS' geologic timescale, the latest age or upper stage of the Late Cretaceous epoch or Upper Cretaceous series, the Cretaceous period or system, and of the Mesozoic era or erathem. It spanned from 70.6 ± 0.6 Ma to 65.5 ± 0.3 Ma...
stage, the diversity of dinosaurs wasn't as great as the preceding Campanian stage. North American herbivorous dinosaurs from this time period include the titanosaur
Titanosaur
Titanosaurs were a diverse group of sauropod dinosaurs, which included Saltasaurus and Isisaurus. It includes some of the heaviest creatures ever to walk the earth, such as Argentinosaurus and Paralititan — which some believe have weighed up to 100 tonnes...
sauropod Alamosaurus
Alamosaurus
Alamosaurus is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period of what is now North America. It was a large quadrupedal herbivore. Isolated vertebrae and limb bones indicate that it reached sizes comparable to Argentinosaurus and Puertasaurus, which would make it the...
, the ceratopsians Triceratops
Triceratops
Triceratops is a genus of herbivorous ceratopsid dinosaur which lived during the late Maastrichtian stage of the Late Cretaceous Period, around 68 to 65 million years ago in what is now North America. It was one of the last dinosaur genera to appear before the great Cretaceous–Paleogene...
and Torosaurus
Torosaurus
Torosaurus is a genus of ceratopsid dinosaur that lived during the late Cretaceous period , between 70 and 65 million years ago. It possessed one of the largest skulls of any known land animal. The frilled skull reached in length...
, the pachycephalosaurs Pachycephalosaurus
Pachycephalosaurus
Pachycephalosaurus is a genus of pachycephalosaurid dinosaur. It lived during the Late Cretaceous Period of what is now North America. Remains have been excavated in Montana, South Dakota, and Wyoming. It was an herbivorous or omnivorous creature which is only known from a single skull and a few...
, Stygimoloch
Stygimoloch
Stygimoloch is a putative genus of pachycephalosaurid dinosaur from the end of the Cretaceous period, roughly 65 million years ago...
, Dracorex
Dracorex
Dracorex is a dinosaur genus of the family Pachycephalosauridae, from the Late Cretaceous of North America.The type species is Dracorex hogwartsia, meaning "dragon king of Hogwarts". It is known from one nearly complete skull , as well as four cervical vertebrae including the atlas, third, ninth...
, and Stegoceras
Stegoceras
Stegoceras is a genus of plant-eating pachycephalosaurid dinosaur that lived in what is now North America during the Late Cretaceous period....
, the hadrosaurs Edmontosaurus
Edmontosaurus
Edmontosaurus is a genus of crestless hadrosaurid dinosaur. It contains two species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago,...
and Anatotitan
Anatotitan
Anatotitan is a genus of flat-headed or hadrosaurine hadrosaurid ornithopod dinosaur from the very end of the Cretaceous Period, in what is now North America...
. Predatory dinosaurs from this time period icluded the tyrannosaurids Tyrannosaurus
Tyrannosaurus
Tyrannosaurus meaning "tyrant," and sauros meaning "lizard") is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex , commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other...
and Nanotyrannus
Nanotyrannus
Nanotyrannus is a genus of tyrannosaurid dinosaur, known only from two juvenile specimens, which may in fact represent juvenile specimens of the contemporary species Tyrannosaurus rex.-History:...
(which may just be a juvenile of the former), and the troodontid Troodon
Troodon
Troodon is a genus of relatively small, bird-like dinosaur from the Late Cretaceous period . Discovered in 1855, it was among the first dinosaurs found in North America...
.
List of North American dinosaurs
Name | Period | Diet | Notes |
---|---|---|---|
Abydosaurus | Cretaceous | herbivore | — |
Achelousaurus Achelousaurus Achelousaurus is a genus of centrosaurine ceratopsid dinosaurs from the Late Cretaceous Period of what is now North America, dated to 74 million years ago... |
Cretaceous | herbivore | — |
Acristavus Acristavus Acristavus is a genus of hadrosaurine hadrosaurid dinosaur. Fossils have been found from the Campanian Two Medicine Formation in Montana and Wahweap Formation in Utah. The type species A. gagslarsoni was named in 2011. Unlike nearly all hadrosaurids except Edmontosaurus, Acristavus lacked... |
Cretaceous | herbivore | — |
Acrocanthosaurus Acrocanthosaurus Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found mainly in the U.S... |
Cretaceous | carnivore | — |
Agathaumas Agathaumas Agathaumas is a dubious genus of a large ceratopsid dinosaur that lived in Wyoming during the Late Cretaceous . The name comes from Greek, αγαν - 'much' and θαυμα - 'wonder'... |
Cretaceous | herbivore | Dubious, see article |
Agujaceratops Agujaceratops Agujaceratops is a genus of herbivorous ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now Texas. Originally known as Chasmosaurus mariscalensis and described by Lehman in 1989, it was moved to a new genus by Lucas, Sullivan and... |
Cretaceous | herbivore | — |
Ahshislepelta Ahshislepelta Ahshislepelta is a genus of herbivorousankylosaurine ankylosaurid dinosaur from Late Cretaceous deposits of San Juan Basin, New Mexico.... |
Cretaceous | herbivore | — |
Alamosaurus Alamosaurus Alamosaurus is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period of what is now North America. It was a large quadrupedal herbivore. Isolated vertebrae and limb bones indicate that it reached sizes comparable to Argentinosaurus and Puertasaurus, which would make it the... |
Cretaceous | herbivore | — |
Alaskacephale Alaskacephale Alaskacephale was a genus of pachycephalosaurid dinosaur that lived in the late Campanian stage of the Late Cretaceous .... |
Cretaceous | herbivore | — |
Albertaceratops Albertaceratops Albertaceratops was a genus of centrosaurine horned dinosaur from the middle Campanian-age Upper Cretaceous Oldman Formation of Alberta, Canada.... |
Cretaceous | herbivore | — |
Albertonykus Albertonykus Albertonykus is a genus of alvarezsaurid dinosaur from lower Maastrichtian-age rocks of the Horseshoe Canyon Formation of Alberta, Canada. It is known from forelimb and hindlimb remains from multiple individuals. All but two of the specimens come from a bonebed dominated by Albertosaurus... |
Cretaceous | carnivore/insectivore | — |
Albertosaurus Albertosaurus Albertosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, more than 70 million years ago. The type species, A. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which... |
Cretaceous | carnivore | — |
Aletopelta Aletopelta Aletopelta coombsi was an ankylosaurian ornithischian dinosaur whose fossils were found in Southern California.Etymologically, the generic name is composed of the Greek terms aletes and pelte, meaning, respectively "wandering" and "shield"... |
Cretaceous | herbivore | — |
Allosaurus Allosaurus Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period . The name Allosaurus means "different lizard". It is derived from the Greek /allos and /sauros... |
Jurassic | carnivore | — |
Ammosaurus Ammosaurus Ammosaurus is a genus of sauropodomorph dinosaur from the Early and Middle Jurassic Period of North America. At 4 meters in length, it was small compared to some other members of its suborder, which included the largest animals ever to walk the Earth... |
Jurassic | herbivore/omnivore | — |
Amphicoelias Amphicoelias Amphicoelias is a genus of herbivorous sauropod dinosaur that includes what may be the largest dinosaur ever discovered, A. fragillimus. Based on surviving descriptions of a single fossil bone, A. fragillimus may have been the longest known vertebrate at in length, and may have had a mass of up... |
Jurassic | herbivore | — |
Anasazisaurus Anasazisaurus Anasazisaurus is a genus of hadrosaurid ornithopod dinosaur that lived about 74 million years ago, in the Late Cretaceous Period. It was found in the Farmington Member of the Kirtland Formation, in the San Juan Basin of New Mexico, United States. Only a partial skull has been found to date... |
Cretaceous | herbivore | — |
Anatotitan Anatotitan Anatotitan is a genus of flat-headed or hadrosaurine hadrosaurid ornithopod dinosaur from the very end of the Cretaceous Period, in what is now North America... |
Cretaceous | herbivore | — |
Anchiceratops Anchiceratops Anchiceratops is a genus of chasmosaurine ceratopsid dinosaur from the Late Cretaceous Period of western North America. Like other ceratopsids, it was a quadrupedal herbivore with three horns on its face, a parrot-like beak, and a long frill extending from the back of its head. The two horns above... |
Cretaceous | herbivore | — |
Anchisaurus Anchisaurus Anchisaurus is a genus of basal sauropodomorph, and was an early herbivorous dinosaur. Until recently it was classed as a member of Prosauropoda. The name comes from the Greek αγχι/agkhi... |
Jurassic | herbivore | — |
Angulomastacator Angulomastacator Angulomastacator is a genus of duck-billed dinosaur from the Campanian-age Aguja Formation of Big Bend National Park, Texas... |
Cretaceous | herbivore | — |
Animantarx Animantarx Animantarx is a genus of nodosaurid ankylosaurian dinosaur from the Upper Cretaceous of western North America. Like other nodosaurs, it would have been a slow-moving quadrupedal herbivore covered in heavy armor scutes, but without a tail club... |
Cretaceous | herbivore | — |
Ankylosaurus Ankylosaurus Ankylosaurus is a genus of ankylosaurid dinosaur, containing one species, A. magniventris... |
Cretaceous | herbivore | — |
Antrodemus Antrodemus Antrodemus is a dubious genus of theropod dinosaur from the Kimmeridgian-Tithonian-age Upper Jurassic Morrison Formation of Middle Park, Colorado... |
Jurassic | carnivore | Probably synonymous with Allosaurus Allosaurus Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period . The name Allosaurus means "different lizard". It is derived from the Greek /allos and /sauros... , see article |
Apatodon Apatodon Apatodon is a dubious genus of dinosaur, possibly synonymous with Allosaurus.When Marsh named it, he thought it was a jaw with a tooth from a Mesozoic pig, but it was soon shown that the specimen was an eroded vertebra, from a dinosaur possibly from the Morrison Formation of the Rocky Mountain region... |
(unknown) | (unknown) | Highly dubious, see article |
Apatosaurus Apatosaurus Apatosaurus , also known by the popular but scientifically deprecated synonym Brontosaurus, is a genus of sauropod dinosaur that lived from about 154 to 150 million years ago, during the Jurassic Period . It was one of the largest land animals that ever existed, with an average length of and a... |
Jurassic | herbivore | Formerly known as Brontosaurus |
Appalachiosaurus Appalachiosaurus Appalachiosaurus is a genus of tyrannosauroid theropod dinosaur from the Late Cretaceous Period of eastern North America. Like almost all theropods, it was a bipedal predator. Only a juvenile skeleton has been found, representing an animal over 7 meters long and weighing over... |
Cretaceous | carnivore | — |
Arkansaurus Arkansaurus "Arkansaurus fridayi" is the informal name of a dinosaur that was discovered in Lockesburg, Arkansas. "Arkansaurus fridayi" was a bipedal coelurosaurian dinosaur, a group of theropods that includes the Tyrannosauridae, Ornithomimidae, and Maniraptora. Its nearest relative was thought to be... |
Cretaceous | carnivore | — |
Arrhinoceratops Arrhinoceratops Arrhinoceratops is a genus of ceratopsian dinosaur. The name was coined as its original describer concluded it had no nose-horn, however further analysis revealed this not to be the case... |
Cretaceous | herbivore | — |
Astrodon Astrodon Astrodon was a genus of large herbivorous sauropod dinosaur, related to Brachiosaurus, that lived in what is now the eastern United States during the Early Cretaceous period. Its fossils have been found in the Arundel Formation, which has been dated through palynomorphs to the Aptian-Albian... |
Cretaceous | herbivore | — |
Atlantosaurus Atlantosaurus Atlantosaurus is a dubious genus of sauropod dinosaur. The type specimen, found by Arthur Lakes in the Morrison Formation of Colorado, USA, was described by Othniel Charles Marsh, a Professor of Paleontology at Yale University , in 1877 as "Titanosaurus" montanus... |
Jurassic | herbivore | — |
Atrociraptor Atrociraptor Atrociraptor is a genus of dromaeosaurid theropod dinosaur from the Late Cretaceous of Alberta, Canada.... |
Cretaceous | carnivore | — |
Aublysodon Aublysodon Aublysodon is a name given to a large number of carnivorous dinosaur teeth of a certain form found in numerous late Cretaceous period geological formations... |
Cretaceous | carnivore | — |
Avaceratops Avaceratops Avaceratops is a genus of small ceratopsian dinosaur which lived during the late Campanian during the Late Cretaceous Period in what are now the Northwest United States.-Discoveries and species:... |
Cretaceous | herbivore | — |
Bambiraptor Bambiraptor Bambiraptor is a Late Cretaceous, 75 million year old, bird-like dromaeosaurid theropod dinosaur described by scientists at the University of Kansas, Yale University, and the University of New Orleans.... |
Cretaceous | carnivore | — |
Barosaurus Barosaurus Barosaurus ; Greek barys/βαρυς meaning 'heavy' and saurus/σαυρος meaning 'lizard', 'heavy lizard') was a giant, long-tailed, long-necked, plant-eating dinosaur closely related to the more familiar Diplodocus... |
Jurassic | herbivore | — |
Beelemodon Beelemodon "Beelemodon" is the informal name given to a genus of undescribed dinosaur from the Late Jurassic. It was possibly a coelurosaur. The fossils of "Beelemodon" consist of one partial skeleton, which was found in the U.S. state of Colorado. The name first appeared in print in 1997, when paleontologist... |
Jurassic | (unknown) | — |
Bistahieversor Bistahieversor Bistahieversor is a genus of tyrannosauroid dinosaur. Bistahieversor existed around 75 million years ago during the Late Cretaceous.... |
Cretaceous | carnivore | — |
Brachiosaurus Brachiosaurus Brachiosaurus is a genus of sauropod dinosaur from the Jurassic Morrison Formation of North America. It was first described by Elmer S. Riggs in 1903 from fossils found in the Grand River Canyon of western Colorado, in the United States. Riggs named the dinosaur Brachiosaurus altithorax,... |
Jurassic/Cretaceous | herbivore | — |
Brachyceratops Brachyceratops Brachyceratops is a dubious genus of ceratopsian dinosaur known only from partial juvenile specimens dating to the late Cretaceous Period of Montana, United States.... |
Cretaceous | herbivore | Only juvenile fossils found so far |
Brachylophosaurus Brachylophosaurus Brachylophosaurus was a mid-sized member of the hadrosaurid family of dinosaurs. It is known from several skeletons and bonebed material from the Judith River Formation of Montana and the Oldman Formation of Alberta, living about 76.5 million years ago.... |
Cretaceous | herbivore | — |
Brontomerus Brontomerus Brontomerus is a genus of camarasauromorph sauropod which lived during the early Cretaceous . It was named in 2011 and the type species is Brontomerus mcintoshi... |
Cretaceous | herbivore | — |
Brontoraptor Brontoraptor "Brontoraptor" is the informal name given to a genus of dinosaur from the Kimmeridgean stage Upper Jurassic Morrison Formation. It was a tetanuran theropod which lived in what is present-day Wyoming, and may have been a megalosaur... |
Jurassic | carnivore | — |
Camarasaurus Camarasaurus Camarasaurus meaning 'chambered lizard', referring to the hollow chambers in its vertebrae was a genus of quadrupedal, herbivorous dinosaurs. It was the most common of the giant sauropods to be found in North America... |
Jurassic | herbivore | — |
Camposaurus Camposaurus Camposaurus is a coelophysoid dinosaur genus from the Late Triassic of North America. With fossils dating back to the early to middle Norian stage, it is the oldest known neotheropod. It is known from partial lower leg bones, holotype UCMP 34498, and other fragmentary material... |
Triassic | carnivore | Dubious, see article |
Camptosaurus Camptosaurus Camptosaurus is a genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic period of western North America. The name means 'flexible lizard', .... |
Jurassic | herbivore | — |
Capitalsaurus Capitalsaurus "Capitalsaurus" is the informal name given to a genus of dinosaur from North America. Its fossils were discovered in Washington, DC. It was a theropod, and it lived during the Cretaceous... |
Cretaceous | carnivore | — |
Caseosaurus Caseosaurus Caseosaurus is a genus of dinosaur from the Late Triassic of North America. The type species, Caseosaurus crosbyensis, was formally described by Hunt, Lucas, Heckert, Sullivan and Lockley in 1998. It was found in the Dockum Formation of Texas, in strata dating to the Late Triassic... |
Triassic | carnivore | — |
Cedarosaurus Cedarosaurus Cedarosaurus was a nasal-crested macronarian dinosaur genus from the Early Cretaceous Period . It was a sauropod which lived in what is now Utah... |
Cretaceous | herbivore | — |
Cedarpelta Cedarpelta Cedarpelta is an extinct genus of basal ankylosaurid ankylosaur, based on material recovered from the Lower Cretaceous of North America. The skull lacks extensive cranial ornamentation, a trait which has been interpreted as plesiomorphic for ankylosaurs.... |
Cretaceous | herbivore | — |
Cedrorestes Cedrorestes Cedrorestes is a genus of iguanodontian dinosaur from the Early Cretaceous of Utah... |
Cretaceous | herbivore | — |
Centrosaurus Centrosaurus Centrosaurus is a genus of herbivorous ceratopsian dinosaurs from the late Cretaceous of Canada. Their remains have been found in the Dinosaur Park Formation and uppermost Oldman Formation, dating from 76.5 to 75.5 million years ago.... |
Cretaceous | herbivore | Not to be confused with Kentrosaurus Kentrosaurus Kentrosaurus is a genus of stegosaurid dinosaur from the Late Jurassic of Tanzania. Its fossils have been found only in the Tendaguru Formation of Tanzania, dated to the Kimmeridgian stage, between about 155.7 ± 4 Ma and 150.8 ± 4 Ma . Apparently, all finds belong to one species, K... |
Cerasinops Cerasinops Cerasinops was a small ceratopsian dinosaur. It lived during the Campanian of the late Cretaceous Period. Its fossils have been found in Two Medicine Formation, in Montana.... |
Cretaceous | herbivore | — |
Ceratops Ceratops Ceratops is a dubious genus of ceratopsian dinosaur which lived during the Late Cretaceous. Its fossils have been found in Montana. Although poorly known, Ceratops is important in the history of dinosaurs, since it is the type species for which both Ceratopsia and Ceratopsidae are named... |
Cretaceous | herbivore | — |
Ceratosaurus Ceratosaurus Ceratosaurus meaning "horned lizard", in reference to the horn on its nose , was a large predatory theropod dinosaur from the Late Jurassic Period , found in the Morrison Formation of North America, in Tanzania and Portugal... |
Jurassic | carnivore | — |
Chasmosaurus Chasmosaurus Chasmosaurus is a genus of ceratopsid dinosaur from the Upper Cretaceous Period of North America. Its name means 'opening lizard', referring to the large openings in its frill . With a length of and a weight of , Chasmosaurus was a ceratopsian of average size... |
Cretaceous | herbivore | — |
Chindesaurus Chindesaurus Chindesaurus is a genus of saurischian dinosaur named after Chinde Point , near where the genoholotype specimen was discovered in the Chinle Formation of Petrified Forest National Park, Arizona, by Bryan Small in 1985... |
Triassic | carnivore | — |
Chirostenotes Chirostenotes Chirostenotes is a genus of oviraptorosaurian dinosaur from the late Cretaceous of Alberta, Canada. The type species is Chirostenotes pergracilis. Some researchers recognize a second species, C... |
Cretaceous | carnivore | — |
Cionodon Cionodon Cionodon was a genus of dinosaur from the Late Cretaceous Period. The type species, Cionodon arctatus lived in what is now present-day Colorado. It is classified as a hadrosaur, and was formally described by Edward Drinker Cope in 1874. It is a nomen dubium because it is based on very fragmentary... |
Cretaceous | herbivore | — |
Claorhynchus Claorhynchus Claorhynchus is a dubious genus of ornithischian dinosaur with a confusing history behind it... |
Cretaceous | herbivore | Dubious, see article |
Claosaurus Claosaurus Claosaurus is a genus of primitive hadrosaurid that lived during the Late Cretaceous Period .Evidence of its existence was first found near the Smoky Hill River in Kansas, USA in the form of partial skull fragments and as an articulated postcranial skeleton... |
Cretaceous | herbivore | — |
Coahuilaceratops Coahuilaceratops Coahuilaceratops is a genus of herbivorous ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now southern Coahuila in northern Mexico. It is known from the holotype CPC 276, a partial skeleton of an adult individual which... |
Cretaceous | herbivore | — |
Coelophysis Coelophysis Coelophysis , meaning "hollow form" in reference to its hollow bones , is one of the earliest known genera of dinosaur... |
Triassic | carnivore | — |
Coelurus Coelurus Coelurus is a genus of coelurosaur dinosaur from the Late Jurassic period . The name means "hollow tail", referring to its hollow tail vertebrae... |
Jurassic | carnivore | — |
Colepiocephale Colepiocephale Colepiocephale is a genus of pachycephalosaurid dinosaur from Late Cretaceous deposits of Alberta, Canada. It was collected from the Foremost Formation . The type species, C. lambei, was originally described by Sternberg , and later renamed by Sullivan in 2003. C... |
Cretaceous | herbivore | — |
Comanchesaurus Comanchesaurus "Comanchesaurus" is an informal name for fossilized remains from the Late Triassic of New Mexico that were initially interpreted as belonging to a theropod dinosaur. The remains, NMMNH P-4569, consist of a partial skeleton including vertebral centra and hindlimb bones, and came from the Norian-age... |
Triassic | (unknown) | — |
Corythosaurus Corythosaurus Corythosaurus is a genus of duck-billed dinosaur from the Upper Cretaceous Period, about 77-76.5 million years ago. It lived in what is now North America... |
Cretaceous | herbivore | — |
Daemonosaurus Daemonosaurus Daemonosaurus is a genus of theropod dinosaur from the Late Triassic of New Mexico. Fossils have been found from deposits in the Chinle Formation, which is latest Triassic in age. While theropods had diversified into several specialized groups by this time, Daemonosaurus is a basal theropod that... |
Triassic | carnivore | — |
Dakotadon Dakotadon Dakotadon is a genus of iguanodont dinosaur from the Barremian-age Lower Cretaceous Lakota Formation of South Dakota, USA, known from a partial skull. It was first described in 1989 as Iguanodon lakotaensis, by David B. Weishampel and Philip R. Bjork. Its assignment has been controversial. Some... |
Cretaceous | herbivore | — |
Daspletosaurus Daspletosaurus Daspletosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America between 77 and 74 million years ago, during the Late Cretaceous Period. Fossils of the only named species were found in Alberta, although other possible species from Alberta and Montana await... |
Cretaceous | carnivore | — |
Deinodon Deinodon Deinodon is a name assigned to tyrannosaurid teeth of the Late Cretaceous of Montana by paleontologist Joseph Leidy in 1856... |
Cretaceous | carnivore | Dubious, see article |
Deinonychus Deinonychus Deinonychus was a genus of carnivorous dromaeosaurid dinosaur. There is one described species, Deinonychus antirrhopus. This 3.4 meter long dinosaur lived during the early Cretaceous Period, about 115–108 million years ago . Fossils have been recovered from the U.S... |
Cretaceous | carnivore | — |
Diabloceratops Diabloceratops Diabloceratops is a genus of herbivorous dinosaur in the infraorder Ceratopsia. It lived in and around Utah during the Campanian stage.-Name:... |
Cretaceous | herbivore | — |
Diclonius Diclonius Diclonius is a genus of dinosaur from the Late Cretaceous. It was a hadrosaur based solely on teeth. Its fossils have been found in North America. The name is in reference to the method of tooth replacement, in which newly erupting replacement teeth could be in functional use at the same time as... |
Cretaceous | herbivore | — |
Dilophosaurus Dilophosaurus Dilophosaurus was a theropod dinosaur from the Sinemurian stage of the Early Jurassic Period, about 193 million years ago. The first specimens were described in 1954, but it was not until over a decade later that the genus received its current name... |
Jurassic | carnivore | — |
Diplodocus Diplodocus Diplodocus , or )is a genus of diplodocid sauropod dinosaur whose fossils were first discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a Neo-Latin term derived from Greek "double" and "beam", in reference to its double-beamed chevron bones... |
Jurassic | herbivore | — |
Diplotomodon Diplotomodon Diplotomodon is a dubious genus of dinosaur from New Jersey. It is only known from a single tooth found in either the Navesink or Hornerstown Formation, dating to the Maastrichtian age of the late Cretaceous period... |
Cretaceous | carnivore | — |
Dracorex Dracorex Dracorex is a dinosaur genus of the family Pachycephalosauridae, from the Late Cretaceous of North America.The type species is Dracorex hogwartsia, meaning "dragon king of Hogwarts". It is known from one nearly complete skull , as well as four cervical vertebrae including the atlas, third, ninth... |
Cretaceous | herbivore | — |
Drinker Drinker Drinker was a genus of hypsilophodont dinosaur from the late Jurassic period of North America. Although based on good remains, it remains obscure due to a lack of post-naming publications.-Description:... |
Jurassic | herbivore | — |
Dromaeosaurus Dromaeosaurus Dromaeosaurus was a genus of theropod dinosaur which lived during the Late Cretaceous period , sometime between 76.5 and 74.8 million years ago, in the western United States and Alberta, Canada. The name means 'running lizard'.... |
Cretaceous | carnivore | — |
Dromiceiomimus | Cretaceous | carnivore(?) | — |
Dryosaurus Dryosaurus Dryosaurus is a genus of an ornithopod dinosaur that lived in the Late Jurassic period. It was an iguanodont . Fossils have been found in the western United States, and were first discovered in the late 19th century... |
Jurassic | herbivore | — |
Dryptosaurus Dryptosaurus Dryptosaurus was a genus of primitive tyrannosaur that lived in Eastern North America during the middle Maastrichtian stage of the Late Cretaceous period. Although largely unknown now outside of academic circles, a famous painting of the genus by Charles R... |
Cretaceous | carnivore | — |
Dyoplosaurus Dyoplosaurus Dyoplosaurus is the name given to a genus of ankylosaurid dinosaur. It lived during the Late Cretaceous near what is now the Red Deer River in Alberta, Canada and was named by William Parks in 1924, based on holotype ROM 784, a partial skeleton including parts of the skull and lower jaws.The type... |
Cretaceous | herbivore | — |
Dysganus Dysganus Dysganus is the name given to a dubious genus of dinosaur from the Late Cretaceous. It was a ceratopsian. Its fossils have been found in Montana.... |
Cretaceous | herbivore | — |
Dyslocosaurus Dyslocosaurus Dyslocosaurus is the name given in 1992 to a genus of sauropod dinosaur, possibly from the Late Jurassic Period. Its fossils were found in North America.... |
Jurassic | herbivore | — |
Dystrophaeus Dystrophaeus Dystrophaeus is the name given to an extinct genus of dinosaur from the early Kimmeridgian stage of the Late Jurassic that existed around 155.7 Ma. It was perhaps a diplodocoid sauropod. Its fossils were found in the Morrison Formation of Utah.... |
Jurassic | herbivore | — |
Edmarka Edmarka Edmarka is a genus of dinosaur from the Late Jurassic of North America. The name honors scientist Bill Edmark. It was a theropod closely related to Torvosaurus, and may, in fact, be a junior synonym of that genus. Its fossils, including a partial skeleton, were found at Como Bluff, Wyoming.The... |
Jurassic | carnivore | — |
Edmontonia Edmontonia Edmontonia was an armoured dinosaur, a part of the nodosaur family from the Late Cretaceous Period. It is named after the Edmonton Formation , the unit of rock it was found in.-Description:... |
Cretaceous | herbivore | — |
Edmontosaurus Edmontosaurus Edmontosaurus is a genus of crestless hadrosaurid dinosaur. It contains two species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago,... |
Cretaceous | herbivore | — |
Einiosaurus Einiosaurus Einiosaurus is a medium-sized centrosaurine ceratopsian from the Upper Cretaceous of northwestern Montana. The name means 'buffalo lizard', in a combination of Blackfeet Indian and Latinized Ancient Greek; the specific name Einiosaurus is a medium-sized centrosaurine (“short-frilled”)... |
Cretaceous | herbivore | — |
Eobrontosaurus Eobrontosaurus Eobrontosaurus is the name given to a genus of dinosaur from the Late Jurassic of North America. It was a sauropod probably closely related to Apatosaurus. It is known from a single site from the lower Morrison Formation, dating to about 154 million years ago. It grew up to long.The type species, E... |
Jurassic | herbivore | — |
Eolambia Eolambia Eolambia is a genus of herbivorous iguanodontian dinosaur from the mid-Cretaceous Period of the USA.In 1992 Carole Jones and her husband Ramal Jones near Castle Dale in Emery County, Utah, on the San Rafael Swell Anticline discovered a fossil site which would be named the Carol Quarry in her honour... |
Cretaceous | herbivore | — |
Eotriceratops Eotriceratops Eotriceratops is a genus of ceratopsian dinosaur which lived during the late Cretaceous period. Its fossils have been found in the uppermost Horseshoe Canyon Formation, dating to about 67.6 million years ago. Its skull is reported to have been around 3 metres long... |
Cretaceous | herbivore | — |
Epanterias Epanterias Epanterias is a dubious genus of theropod dinosaur from the Kimmeridgian-Tithonian-age Upper Jurassic upper Morrison Formation of Garden Park, Colorado. It was described by Edward Drinker Cope in 1878. The type species is Epanterias amplexus. This genus is based on what is now AMNH 5767, parts of... |
Jurassic | carnivore | — |
Epichirostenotes Epichirostenotes Epichirostenotes is a genus of oviraptorosaurian dinosaur from the late Cretaceous. Epichirostenotes is known from an incomplete skeleton found in 1923 at the Horseshoe Canyon Formation, in strata dated to about 72 million years ago. It was first named by Robert M. Sullivan, Steven E. Jasinski and... |
Cretaceous | carnivore | — |
Euoplocephalus Euoplocephalus Euoplocephalus was one of the largest genera of ankylosaurian dinosaurs, at about the size of a small elephant. It is also the ankylosaurian with the best fossil record, so its extensive spiked armor, low-slung body and great club-like tail are well documented.-Description:Among the... |
Cretaceous | herbivore | — |
Falcarius Falcarius Falcarius is a genus of therizinosaurian dinosaur found in east-central Utah, United States. Its name is derived from the word sickle , which scientists have used to describe its unwieldy clawed hands... |
Cretaceous | (disputed) | Apparently in the course of switching from carnivore to herbivore |
Fruitadens Fruitadens Fruitadens is a genus of heterodontosaurid dinosaur. The name means "Fruita tooth", in reference to Fruita, Colorado , where its fossils were first found. It is known from partial skulls and skeletons from at least four individuals of differing biological ages, found in Tithonian rocks of the... |
Jurassic | omnivore | — |
Gargoyleosaurus Gargoyleosaurus Gargoyleosaurus is one of the earliest ankylosaurs known from reasonably complete fossil remains. Its skull measures in length, and its total body length is an estimated . It may have weighed as much as... |
Jurassic | herbivore | — |
Gastonia Gastonia (dinosaur) Gastonia is a genus of nodosaurid dinosaur from the Early Cretaceous of North America, around 125 million years ago. Closely related to Polacanthus, it has a sacral shield and large shoulder spikes. It is also the first polacanthine dinosaur to have been mounted for display at the Denver Museum of... |
Cretaceous | herbivore | — |
Geminiraptor Geminiraptor Geminiraptor is a genus of troodontid dinosaur. Geminiraptor lived during the lower Cretaceous period in what is now Utah, USA. It is known from CEUM 7319, a maxilla recovered from the lower Yellow Cat Member of the Cedar Mountain Formation, dating to at least the early Barremian stage... |
Cretaceous | omnivore | — |
Glishades Glishades Glishades is a genus of hadrosauroid dinosaur that lived in the Late Cretaceous in North America. It is based on AMNH 27414, two partial premaxillae discovered in the Upper Cretaceous rocks of the Two Medicine Formation in Montana... |
Cretaceous | herbivore | — |
Glyptodontopelta Glyptodontopelta Glyptodontopelta is a genus of dinosaur from the Late Cretaceous. It was an ankylosaur, an armored dinosaur.... |
Cretaceous | herbivore | — |
Gojirasaurus Gojirasaurus Gojirasaurus is a dubious genus of dinosaur named after the giant monster movie character Gojira . It was discovered in the Bull Canyon Formation... |
Triassic | carnivore | — |
Gorgosaurus Gorgosaurus Gorgosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, between about 76.5 and 75 million years ago. Fossil remains have been found in the Canadian province of Alberta and possibly the U.S. state of Montana.... |
Cretaceous | carnivore | — |
Gravitholus Gravitholus Gravitholus was a genus of dinosaur from the late Cretaceous period . It was a pachycephalosaur, a type of dinosaur with a thick skull made of hardened bone. It lived in what is now Alberta, Canada, and was described in 1979 by W. P. Wall and Peter Galton.The type species is Gravitholus albertae... |
Cretaceous | herbivore | — |
Gryposaurus Gryposaurus Gryposaurus was a genus of duckbilled dinosaur that lived about 83 to 75.5 million years ago, in the Late Cretaceous of North America... |
Cretaceous | herbivore | — |
Hadrosaurus Hadrosaurus Hadrosaurus is a valid genus of hadrosaurid dinosaur. In 1858, a skeleton of a dinosaur from this genus was the first dinosaur skeleton known from more than isolated teeth to be found in North America. In 1868, it became the first ever mounted dinosaur skeleton... |
Cretaceous | herbivore | — |
Hagryphus Hagryphus Hagryphus is an oviraptorosaurian theropod dinosaur from the Upper Cretaceous Period of what is now Utah. To date, only a single species is known, H. giganteus... |
Cretaceous | carnivore | — |
Hanssuesia Hanssuesia Hanssuesia is a genus of pachycephalosaurid dinosaur from the late Cretaceous period. It lived in what is now Alberta and Montana.Hanssuesia based on material originally named Troodon sternbergi by Barnum Brown and Erich Maren Schlaikjer in 1943. Later, it was transferred to Stegoceras as S.... |
Cretaceous | herbivore | — |
Haplocanthosaurus Haplocanthosaurus Haplocanthosaurus is a genus of sauropod dinosaur. Two species, H. delfsi and H. priscus, are known from incomplete fossil skeletons. It lived during the late Jurassic period , 155 to 152 million years ago. The type species is H. priscus, and the referred species H... |
Jurassic | herbivore | — |
Hesperonychus Hesperonychus Hesperonychus was a genus of small, carnivorous dromaeosaurid dinosaur. There is one described species, Hesperonychus elizabethae; the type species was named in honor of the woman who collected it in 1982... |
Cretaceous | carnivore | — |
Hesperosaurus Hesperosaurus Hesperosaurus was a herbivorous dinosaur from the Kimmeridgian to Tithonian epochs of the Jurassic period , whose fossils are found in the state of Wyoming in the United States of America... |
Jurassic | herbivore | — |
Hippodraco Hippodraco Hippodraco is a genus of herbivorous iguanodontian dinosaur. It is a basal iguanodontian which lived during the Lower Cretaceous period in what is now Utah, USA... |
Cretaceous | herbivore | — |
Hoplitosaurus Hoplitosaurus Hoplitosaurus 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... |
Cretaceous | herbivore | — |
Hypacrosaurus Hypacrosaurus Hypacrosaurus was a genus of duckbill dinosaur similar in appearance to Corythosaurus. Like Corythosaurus, it had a tall, hollow rounded crest, although not as large and straight... |
Cretaceous | herbivore | — |
Hypsibema Hypsibema Hypsibema is a little-known genus of dinosaur from the Late Cretaceous . Its giant fossils were found in the U.S. states of North Carolina and Missouri... |
Cretaceous | herbivore | — |
Iguanacolossus Iguanacolossus Iguanacolossus is a genus of herbivorous iguanodontian dinosaur. It is a basal iguanodontian which lived during the lower Cretaceous period in what is now Utah, USA... |
Cretaceous | herbivore | — |
Jeyawati Jeyawati Jeyawati is a genus of hadrosauroid dinosaur which lived during the Turonian stage of the Late Cretaceous. The type species, J. rugoculus, was described in 2010, based on fossils recovered in the U.S. state of New Mexico.... |
Cretaceous | herbivore | — |
Kayentavenator Kayentavenator Kayentavenator is a small carnivorous dinosaur genus which lived during the Early Jurassic Period; fossils were recovered from the Kayenta Formation of northeastern Arizona and were described in 2010.-Description:... |
Jurassic | carnivore | — |
Koparion Koparion Koparion is a genus of small theropod dinosaur, known only from isolated teeth. Koparion douglassi, the type specimen, was described by Chure in 1994, who believed it to be a coelurosaurian theropod, possibly one of the oldest known troodontids. Found in Utah, the fossil is from the late Jurassic... |
Jurassic | (unknown) | — |
Kosmoceratops Kosmoceratops Kosmoceratops is a genus of herbivorous chasmosaurine ceratopsian dinosaur, which lived during the Late Cretaceous period in the part of the island continent Laramidia that is now Utah, United States... |
Cretaceous | herbivore | — |
Kritosaurus Kritosaurus Kritosaurus is an incompletely known but historically important genus of hadrosaurid dinosaur. It lived about 73 million years ago, in the Late Cretaceous of North America... |
Cretaceous | herbivore | — |
Labocania Labocania Labocania is a genus of theropod, possibly tyrannosauroid, dinosaur from Baja California, Mexico, which lived 70 million years ago, in the Campanian stage of the late Cretaceous Period. The name references the "La Bocana Roja" Formation, which translates as "red lips". The type species, L.... |
Cretaceous | carnivore | — |
Lambeosaurus Lambeosaurus Lambeosaurus is a genus of hadrosaurid dinosaur that lived about 76 to 75 million years ago, in the Late Cretaceous Period of North America. This bipedal/quadrupedal, herbivorous dinosaur is known for its distinctive hollow cranial crest, which in the best-known species resembled a hatchet... |
Cretaceous | herbivore | — |
Laosaurus Laosaurus Laosaurus is a genus of hypsilophodont dinosaur. The type species is Laosaurus celer, first described by O.C. Marsh in 1878 from remains from the Oxfordian-Tithonian-age Upper Jurassic Morrison Formation of Wyoming. The validity of this genus is doubtful because it is based on fragmentary fossils... |
Jurassic/Cretaceous | herbivore | — |
Leptoceratops Leptoceratops Leptoceratops , was a primitive ceratopsian dinosaur genus from the Late Cretaceous Period of what is now Western North America, at the same time as its giant... |
Cretaceous | herbivore | — |
Lophorhothon Lophorhothon Lophorhothon is a genus of hadrosauroid dinosaur from the Late Cretaceous, the first genus of dinosaur discovered in Alabama.-Discovery and naming:... |
Cretaceous | herbivore | — |
Madsenius Madsenius "Madsenius" is the name given to an as-yet undescribed genus of dinosaur from the Late Jurassic of North America, from the Morrison Formation. It was a theropod which may have been closely related to Allosaurus, or even a species of Allosaurus... |
Jurassic | carnivore | — |
Magulodon Magulodon "Magulodon" is the name given to an as yet undescribed genus of dinosaur from the Early Cretaceous . It was a possible ornithischian, either an ornithopod or basal ceratopsian, which lived in what is now Maryland, in the United States. The type species, "Magulodon muirkirkensis", was coined by... |
Cretaceous | herbivore | — |
Maiasaura Maiasaura Maiasaura is a large duck-billed dinosaur genus that lived in the area currently covered by the state of Montana in the Upper Cretaceous Period , about 74 million years ago.... |
Cretaceous | herbivore | — |
Marshosaurus Marshosaurus Marshosaurus was a genus of medium sized theropod, with a size up to 5 or 6 meters in length and a skull about 60 cm long. It is known from parts of at least three individuals from the Morrison Formation of Utah and Colorado.The holotype is a left ilium, or upper pelvis bone found at the... |
Jurassic | carnivore | — |
Megapnosaurus Megapnosaurus Megapnosaurus was a dinosaur of the theropod family Coelophysidae, formerly called Syntarsus , living during the Early Jurassic. It was renamed by American entomologist Dr. Michael Ivie , Polish Australian Dr... |
Jurassic | carnivore | Formerly known as Syntarsus |
Medusaceratops Medusaceratops Medusaceratops is a genus of herbivorous ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now Montana. It is known from two partial parietals, the holotype WDC DJR 001 and the paratype WDC DJR 002... |
Cretaceous | herbivore | — |
Microcephale Microcephale "Microcephale" is the informal name of a genus of very small pachycephalosaurid dinosaur, otherwise known as the "North American dwarf species", which lived during the Late Cretaceous. Its fossils were found in the late Campanian-age Dinosaur Park Formation, in Alberta, Canada... |
Cretaceous | herbivore | — |
Microvenator Microvenator Microvenator is a genus of dinosaur from the Early Cretaceous Cloverly Formation in what is now south central Montana. Microvenator was an oviraptorosaurian theropod. The holotype fossil is an incomplete skeleton, most likely a juvenile, with a living length of about four feet. The adult size of... |
Cretaceous | carnivore | — |
Moabosaurus Moabosaurus "Moabosaurus" is the informal name given to an as yet undescribed genus of dinosaur from the Early Cretaceous. It was possibly a camarasaurid sauropod, and was discovered in the Cedar Mountain Formation near Moab, Utah. The full binomial name, "Moabosaurus utahensis", first appeared in print in... |
Cretaceous | herbivore | — |
Mojoceratops Mojoceratops Mojoceratops is a genus of ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now Western Canada... |
Cretaceous | herbivore | — |
Monoclonius Monoclonius Monoclonius was a ceratopsian dinosaur from the Judith River Formation of Late Cretaceous Montana and Canada. It is often confused with Centrosaurus, a similar genus of ceratopsian . Monoclonius was described by Edward Drinker Cope in 1876... |
Cretaceous | herbivore | — |
Montanoceratops Montanoceratops Montanoceratops was a genus of small ceratopsian dinosaur. It lived during the early Maastrichtian of the late Cretaceous Period... |
Cretaceous | herbivore | — |
Mymoorapelta Mymoorapelta Mymoorapelta is an ankylosaur from the Late Jurassic Morrison Formation of western Colorado. The taxon is known from portions of a disarticulated skull, parts of three different skeletons and other postcranial remains... |
Jurassic | herbivore | — |
Naashoibitosaurus Naashoibitosaurus Naashoibitosaurus is a genus of hadrosaurid dinosaur that lived about 73 million years ago, in the Late Cretaceous, and was found in the Kirtland Formation of the San Juan Basin in New Mexico, United States. Only a partial skeleton has been found to date... |
Cretaceous | herbivore | — |
Nanosaurus Nanosaurus Nanosaurus is the name given to a genus of dinosaur from the Late Jurassic. Described by Othniel Charles Marsh in 1877, it is a poorly-known ornithischian of uncertain affinities. Its fossils are known from the Morrison Formation of Colorado and possibly Wyoming... |
Jurassic | herbivore (?) | — |
Nanotyrannus Nanotyrannus Nanotyrannus is a genus of tyrannosaurid dinosaur, known only from two juvenile specimens, which may in fact represent juvenile specimens of the contemporary species Tyrannosaurus rex.-History:... |
Cretaceous | carnivore | — |
Nedcolbertia Nedcolbertia Nedcolbertia is a genus of dinosaur from the Early Cretaceous Period. It was a coelurosaur which lived in North America during the Barremian. Kirkland, Britt, Madsen and Burge in 1995 reported its discovery in the basal Cedar Mountain Formation in Utah. The type species, N... |
Cretaceous | (unknown) | — |
Nedoceratops | Cretaceous | herbivore | — |
Niobrarasaurus Niobrarasaurus Niobrarasaurus is an extinct genus of nodosaurid ankylosaur which lived during the Cretaceous 87 to 82 million years ago. Its fossils were found in the Smoky Hill Chalk Member of the Niobrara Formation, in western Kansas, which would have been near the middle of Western Interior Sea during the... |
Cretaceous | herbivore | — |
Nodocephalosaurus Nodocephalosaurus Nodocephalosaurus is a genus of herbivorous ankylosaurine ankylosaurid dinosaur from Upper Cretaceous deposits of San Juan Basin, New Mexico. The holotype was recovered from the Late Campanian De-na-zin Member of the Kirtland Formation and consists of an incomplete skull... |
Cretaceous | herbivore | — |
Nodosaurus Nodosaurus Nodosaurus was a genus of herbivorous ankylosaurian dinosaur from the Late Cretaceous, the fossils of which are found in North America. Two incomplete specimens have been discovered in Wyoming and Kansas, and no skulls... |
Cretaceous | herbivore | — |
Nothronychus Nothronychus Nothronychus is a genus of theropod dinosaur classified in the group Therizinosauria, from the Cretaceous of North America.The type species of this dinosaur, Nothronychus mckinleyi, was described by James Kirkland and Douglas G. Wolfe in 2001... |
Cretaceous | herbivore | — |
Ojoceratops Ojoceratops Ojoceratops is a genus of ceratopsian dinosaur which lived in what is now New Mexico. Ojoceratops fossils have been recovered from strata of the Ojo Alamo Formation , dating to the late Cretaceous period . The type species is Ojoceratops fowleri... |
Cretaceous | herbivore | — |
Ojoraptorsaurus Ojoraptorsaurus Ojoraptorsaurus is a genus of oviraptorosaurian dinosaur from the late Cretaceous. Ojoraptorsaurus is known from the holotype SMP VP-1458 an incomplete pair of fused pubes found at the Naashoibito Member of the Ojo Alamo Formation dating from the early Maastrichtian, about 69 million years... |
Cretaceous | carnivore | — |
Orcomimus Orcomimus "Orcomimus" is the name given to an as yet undescribed genus of dinosaur from the Late Cretaceous period around 84–65 million years ago. The dinosaur was an ornithomimid which lived in what is now South Dakota, in the United States... |
Cretaceous | carnivore | — |
Ornatotholus | Cretaceous | herbivore | — |
Ornitholestes Ornitholestes Ornitholestes was a small theropod dinosaur of the late Jurassic of Western Laurasia . To date, it is known only from a single partial skeleton, and badly crushed skull found at the Bone Cabin Quarry near Medicine Bow, Wyoming, in 1900... |
Jurassic | carnivore | — |
Ornithomimus Ornithomimus Ornithomimus is a genus of ornithomimid dinosaur from the Late Cretaceous Period of what is now North America.In 1890 Ornithomimus velox was named by Othniel Charles Marsh on the basis of a foot and partial hand from the Maastrichtian Denver Formation. Another seventeen species have been named since... |
Cretaceous | herbivore | — |
Orodromeus Orodromeus Orodromeus is a genus of herbivorous ornithopod dinosaur from the Late Cretaceous of North America.-Discovery and naming:... |
Cretaceous | herbivore | — |
Oryctodromeus Oryctodromeus Oryctodromeus was a genus of small ornithopod dinosaur. Fossils are known from the middle Cretaceous Blackleaf Formation of southwestern Montana and the Wayan Formation of southeastern Idaho, both of the Cenomanian stage, roughly 95 million years ago... |
Cretaceous | herbivore | — |
Osmakasaurus Osmakasaurus Osmakasaurus is a genus of herbivorous iguanodontian dinosaur. It is a basal iguanodontian which lived during the lower Cretaceous period in what is now Buffalo Gap of South Dakota, USA. It is known from the Chilson Member of the Lakota Formation. This genus was named by Andrew T. McDonald in 2011... |
Cretaceous | herbivore | — |
Othnielia Othnielia Othnielia is a genus of ornithischian dinosaur, named after its original describer, Professor Othniel Charles Marsh, an American paleontologist of the 19th century... |
Jurassic | herbivore | — |
Othnielosaurus Othnielosaurus Othnielosaurus is a genus of ornithischian dinosaur that lived about 155 to 148 million years ago, during the Late Jurassic-age Morrison Formation of the western United States. It is named in honor of famed paleontologist Othniel Charles Marsh, and was formerly assigned to the genus... |
Jurassic | herbivore/omnivore | — |
Pachycephalosaurus Pachycephalosaurus Pachycephalosaurus is a genus of pachycephalosaurid dinosaur. It lived during the Late Cretaceous Period of what is now North America. Remains have been excavated in Montana, South Dakota, and Wyoming. It was an herbivorous or omnivorous creature which is only known from a single skull and a few... |
Cretaceous | herbivore | — |
Pachyrhinosaurus Pachyrhinosaurus Pachyrhinosaurus is a genus of ceratopsid dinosaurs from the Late Cretaceous period of North America. The first examples were discovered by Charles M. Sternberg in Alberta, Canada, in 1946, and named in 1950. Over a dozen partial skulls and a large assortment of other fossils from various species... |
Cretaceous | herbivore | — |
Palaeopteryx Palaeopteryx Palaeopteryx is a genus of theropod dinosaur now considered a nomen dubium. It was named and misidentified by J. A. Jensen in 1981, then redescribed by Jensen and K. Padian in 1989. At that time the binomial Palaeopteryx thomsoni was deemed invalid by Jensen... |
Jurassic | (unknown) | Dubious, see article |
Palaeoscincus Palaeoscincus Palaeoscincus is a dubious genus of ankylosaurian dinosaur based on teeth from the mid-late Campanian-age Upper Cretaceous Judith River Formation of Montana... |
Cretaceous | herbivore | — |
Paluxysaurus Paluxysaurus Paluxysaurus is a genus of basal titanosauriform sauropod dinosaur from the late Aptian or early Albian-age Lower Cretaceous Twin Mountains Formation of Hood County, Texas, USA... |
Cretaceous | herbivore | — |
Panoplosaurus Panoplosaurus Panoplosaurus is a genus of nodosaurid dinosaur. It was one of the last known nodosaurids, living during the Late Cretaceous in what is now North America; fossils have been located in Alberta, Canada.... |
Cretaceous | herbivore | — |
Parasaurolophus Parasaurolophus Parasaurolophus is a genus of ornithopod dinosaur that lived in what is now North America during the Late Cretaceous Period, about 76.5–73 million years ago. It was an herbivore that walked both as a biped and a quadruped. Three species are recognized: P. walkeri , P. tubicen, and the... |
Cretaceous | herbivore | — |
Parksosaurus Parksosaurus Parksosaurus was a genus of hypsilophodont ornithopod dinosaur from the early Maastrichtian-age Upper Cretaceous Horseshoe Canyon Formation of Alberta, Canada. It is based on most of a partially articulated skeleton and partial skull, showing it to have been a small, bipedal, herbivorous dinosaur... |
Cretaceous | herbivore | — |
Paronychodon Paronychodon Paronychodon was a theropod dinosaur genus. It is a tooth taxon, considered dubious because of the fragmentary nature of the fossils, which include "buckets" of teeth but no other remains... |
Cretaceous | carnivore | — |
Pawpawsaurus Pawpawsaurus Pawpawsaurus, meaning "Pawpaw Lizard", is a nodosaurid ankylosaur from the Cretaceous of Tarrant County, Texas, discovered in May 1992. The only species yet assigned to this taxon, Pawpawsaurus campbelli, is based on a complete skull from the marine Paw Paw Formation... |
Cretaceous | herbivore | — |
Peloroplites Peloroplites Peloroplites is a genus of nodosaurid armored dinosaur from Lower Cretaceous rocks of Utah... |
Cretaceous | herbivore | — |
Pentaceratops Pentaceratops Pentaceratops is a genus of ceratopsid dinosaur from the late Cretaceous Period of what is now North America. The appearance of Pentaceratops sternbergii in the fossil record marks the end of the Judithian land vertebrate age and the start of the Kirtlandian... |
Cretaceous | herbivore | — |
Planicoxa Planicoxa Planicoxa is a genus of advanced iguanodontian dinosaur from the Early Cretaceous of North America. It is known from the partial skeletons of several individual specimens. Its fossils were discovered in Utah and South Dakota, United States.... |
Cretaceous | herbivore | — |
Pleurocoelus | Cretaceous | herbivore | — |
Podokesaurus Podokesaurus Podokesaurus was a small carnivorous dinosaur of the Early Jurassic Period , and as such is one of the earliest known dinosaurs to inhabit the eastern United States . The small, bipedal carnivore was about 90 cm long and 0.3 m tall... |
Jurassic | carnivore | — |
Polyonax Polyonax Polyonax was a genus of ceratopsid dinosaur from the late Maastrichtian-age Upper Cretaceous Denver Formation of Colorado, USA... |
Cretaceous | herbivore | — |
Prenoceratops Prenoceratops Prenoceratops, is a genus of ceratopsian dinosaur from the Late Cretaceous Period. Its fossils have been found in the Two Medicine Formation in the present-day U.S. state of Montana... |
Cretaceous | herbivore | — |
Priconodon Priconodon Priconodon is an extinct genus of dinosaur , known from its large teeth. Its remains have been found in the Aptian-Albian age Lower Cretaceous Arundel Formation of Muirkirk, Prince George's County, Maryland.-History:... |
Cretaceous | herbivore | — |
Propanoplosaurus Propanoplosaurus Propanoplosaurus is a genus of herbivorous nodosaurid dinosaur from the Early Cretaceous Patuxent Formation of Maryland. Its type specimen is a natural cast and partial natural mold of a hatchling.... |
Cretaceous | herbivore | — |
Prosaurolophus Prosaurolophus Prosaurolophus is a genus of hadrosaurid dinosaur from the Late Cretaceous of North America. It is known from the remains of at least 25 individuals belonging to two species, including skulls and skeletons, but it remains obscure... |
Cretaceous | herbivore | — |
Protoavis Protoavis Protoavis is a problematic taxon of archosaurian known from fragmentary remains from Late Triassic Norian stage deposits near Post, Texas. Much controversy remains over the animal, and there are many different interpretations of what Protoavis actually is... |
Cretaceous | (unknown) | Dubious, see article |
Protohadros Protohadros Protohadros is a genus of herbivorous ornithischian dinosaur from the Late Cretaceous , 95 million years ago.... |
Cretaceous | herbivore | — |
Pteropelyx Pteropelyx Pteropelyx is a dubious genus of Late Cretaceous hadrosaurid dinosaur from the Judith River Formation of Montana, named by Edward Drinker Cope in 1889. Historically, several species were assigned to it, all based on extremely fragmentary remains, but there is no evidence to support these assignments... |
Cretaceous | herbivore | — |
Richardoestesia | Cretaceous | carnivore | — |
Rubeosaurus Rubeosaurus Rubeosaurus is a genus of ceratopsian dinosaur which lived in what is now North America. Rubeosaurus fossils have been recovered from strata of the upper Two Medicine Formation of the Upper Cretaceous of Montana, dating to between 75 and 74 million years ago... |
Cretaceous | herbivore | — |
Sarahsaurus Sarahsaurus Sarahsaurus is a genus of basal sauropodomorph dinosaur which lived during the lower Jurassic period in what is now northeastern Arizona, USA.... |
Jurassic | omnivore | — |
Saurolophus Saurolophus Saurolophus is a genus of large hadrosaurine duckbill that lived about 69.5-68.5 million years ago, in the Late Cretaceous of North America and Asia; it is one of the few genera of dinosaurs known from multiple continents. It is distinguished by a spike-like crest which projects up and back... |
Cretaceous | herbivore | — |
Sauropelta Sauropelta Sauropelta is a genus of nodosaurid dinosaur that existed in the Early Cretaceous Period of North America. One species has been named although others may have existed. Anatomically, Sauropelta is one of the most well-understood nodosaurids, with fossilized remains recovered in the U.S. states of... |
Cretaceous | herbivore | — |
Saurophaganax Saurophaganax Saurophaganax is a genus of allosaurid dinosaur from the Morrison Formation of Late Jurassic Oklahoma . Some paleontologists consider it to be a species of Allosaurus... |
Jurassic | carnivore | — |
Sauroposeidon Sauroposeidon Sauroposeidon is a genus of sauropod dinosaur known from four neck vertebrae that were found in the southeastern portion of the US state of Oklahoma. The fossils were found in rocks dating to the Early Cretaceous, a period when the sauropods of North America had diminished in both size and... |
Cretaceous | herbivore | — |
Saurornitholestes Saurornitholestes Saurornitholestes is a genus of carnivorous dromaeosaurid theropod dinosaur from the late Cretaceous of Alberta, Montana and New Mexico.... |
Cretaceous | carnivore | — |
Scelidosaurus Scelidosaurus Scelidosaurus is a genus of quadrupedal, lightly plated, herbivorous dinosaur about long. It lived during the Early Jurassic Period, during the Hettangian to Sinemurian stages around 199.6 to 194 million years ago. Its fossils have been found in both England and in Arizona, in the United... |
Jurassic | herbivore | — |
Scutellosaurus Scutellosaurus Scutellosaurus is a genus of herbivorous dinosaur that lived in North America around 200 to 196 million years ago, in the Early Jurassic times.... |
Jurassic | herbivore | — |
Segisaurus Segisaurus Segisaurus is a genus of small coelophysoid theropod dinosaur, that measured approximately 1 metre in length. The only known specimen was discovered in 1933 in early Jurassic strata in Tsegi Canyon, Arizona, for which it was named. Segisaurus is the only dinosaur to have ever been excavated from... |
Jurassic | carnivore | — |
Seitaad Seitaad Seitaad is a genus of sauropodomorph dinosaur which lived during the lower Jurassic period in what is now southern Utah, USA.Seitaad is known from an articulated partial postcranial holotype skeleton referred to as UMNH VP 18040. The skeleton is missing its head, neck and tail... |
Jurassic | omnivore | — |
Silvisaurus Silvisaurus Silvisaurus, from the Latin silva "woodland" and Greek saurus "lizard", is a nodosaurid ankylosaur from the middle Cretaceous of Kansas.-Discovery and species:... |
Cretaceous | herbivore | — |
Sonorasaurus Sonorasaurus Sonorasaurus is a genus of brachiosaurid dinosaur from the middle Cretaceous . It was a herbivorous sauropod whose fossils have been found in southern Arizona in the United States. Its name, which means "Sonora lizard", comes from the Sonoran Desert where its fossils were first found... |
Cretaceous | herbivore | — |
Sphaerotholus Sphaerotholus Sphaerotholus is a genus of pachycephalosaurid dinosaur from the Upper Cretaceous of the western United States. To date, two species have been described: the type species, S. goodwini, from the Den-na-zin Member of the Kirtland Formation of San Juan County, New Mexico, and a second species, S... |
Cretaceous | herbivore | — |
Stegoceras Stegoceras Stegoceras is a genus of plant-eating pachycephalosaurid dinosaur that lived in what is now North America during the Late Cretaceous period.... |
Cretaceous | herbivore | — |
Stegopelta Stegopelta Stegopelta is a genus of armored dinosaur. It is based on a partial skeleton from the latest Albian-earliest Cenomanian-age Lower and Upper Cretaceous Belle Fourche Member of the Frontier Formation of Fremont County, Wyoming.... |
Cretaceous | herbivore | — |
Stegosaurus Stegosaurus Stegosaurus is a genus of armored stegosaurid dinosaur. They lived during the Late Jurassic period , some 155 to 150 million years ago in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well... |
Jurassic | herbivore | — |
Stokesosaurus Stokesosaurus Stokesosaurus is a genus of small , early tyrannosaur from the Late Jurassic period of Utah and England. It was named after Utah geologist William Lee Stokes... |
Jurassic | carnivore | — |
Struthiomimus Struthiomimus Struthiomimus is a genus of ornithomimid dinosaur from the late Cretaceous of Alberta, Canada. It was a long-legged, ostrich-like dinosaur.The bipedal Struthiomimus stood about long and tall at the hips and weighed around... |
Cretaceous | herbivore/omnivore | — |
Stygimoloch Stygimoloch Stygimoloch is a putative genus of pachycephalosaurid dinosaur from the end of the Cretaceous period, roughly 65 million years ago... |
Cretaceous | herbivore | — |
Styracosaurus Styracosaurus Styracosaurus was a genus of herbivorous ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago... |
Cretaceous | herbivore | — |
Supersaurus Supersaurus Supersaurus is a genus of diplodocid sauropod dinosaur discovered by Vivian Jones of Delta, Colorado, in the Upper Jurassic Morrison Formation of Colorado in 1972. The fossil remains came from the Brushy Basin Member of the formation, dating to about 153 million years ago... |
Jurassic | herbivore | — |
Suuwassea Suuwassea Suuwassea is a genus of diplodocoid sauropod dinosaur found in the Upper Jurassic strata of the Morrison Formation, located in southern Carbon County, Montana, USA. The fossil remains were recovered in a series of expeditions during a period spanning the years 1999 and 2000, described by J.D.... |
Jurassic | herbivore | — |
Talos Talos (dinosaur) Talos is an extinct genus of carnivorous bird-like theropod dinosaur, an advanced troodontid which lived during the late Cretaceous period in what is now Utah, USA.... |
Cretaceous | carnivore/omnivore | — |
Tanycolagreus Tanycolagreus Tanycolagreus is a genus of coelurid theropod from the Late Jurassic of North America. The holotype is a partial skeleton recovered from the Bone Cabin Quarry West locality, Albany County, Wyoming, from the Morrison Formation... |
Jurassic | carnivore | — |
Tatankacephalus Tatankacephalus Tatankacephalus is a basal genus of ankylosaurid dinosaur that lived during the Early Cretaceous.Its fossil has been collected from the Cloverly Formation of central Montana during 1996, 1997 and 1998, in the region of the Middle Dome in Wheatland County. The type species is T. cooneyorum,... |
Cretaceous | herbivore | — |
Tatankaceratops Tatankaceratops Tatankaceratops is a controversial genus of herbivorous ceratopsian dinosaur. It is a small chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now South Dakota. It is known from a single partial skull which was collected from the Hell Creek Formation, dating to... |
Cretaceous | herbivore | — |
Tawa Tawa (dinosaur) Tawa is a genus of theropod dinosaur from the Late Triassic period. It is estimated to have been 2 m long... |
Triassic | carnivore | — |
Tenontosaurus Tenontosaurus Tenontosaurus is a genus of medium- to large-sized ornithopod dinosaur. The genus is known from the late Aptian to Albian ages of the middle Cretaceous period sediments of western North America, dating between 115 to 108 million years ago... |
Cretaceous | herbivore | — |
Teratophoneus Teratophoneus Teratophoneus is a genus of carnivorous tyrannosaurid theropod dinosaur which lived during the late Cretaceous period in what is now Utah, USA. It is known from an incomplete skull and postcranial skeleton recovered from the Kaiparowits Formation. Teratophoneus was named by Thomas D. Carr, Thomas E... |
Cretaceous | carnivore | — |
Texacephale Texacephale Texacephale is a genus of basal pachycephalosaurid dinosaur from the Campanian stage of the Late Cretaceous. The type species is Texacephale langstoni; its fossils were discovered in the Aguja Formation and described in 2010 by Longrich, Sankey and Tanke... |
Cretaceous | herbivore | — |
Texasetes Texasetes Texasetes is a genus of ankylosaurian dinosaur from the late Lower Cretaceous of North America. This poorly known genus has been recovered from the Paw Paw Formation near Haslet, Tarrant County Texas, which has also produced the nodosaurid ankylosaur Pawpawsaurus... |
Cretaceous | herbivore | — |
Theiophytalia Theiophytalia Theiophytalia is a genus of herbivorous iguanodontian dinosaur from the lower Cretaceous period of Colorado.-Etymology:... |
Cretaceous | herbivore | — |
Thescelosaurus Thescelosaurus Thescelosaurus was a genus of small ornithopod dinosaur that appeared at the very end of the Late Cretaceous period in North America. It was a member of the last dinosaurian fauna before the Cretaceous-Tertiary extinction event around 65.5 million years ago... |
Cretaceous | herbivore | — |
Thespesius Thespesius Thespesius is a dubious genus of hadrosaurid dinosaur from the late Maastrichtian-age Upper Cretaceous Lance Formation of South Dakota.... |
Cretaceous | herbivore | — |
Tichosteus Tichosteus Tichosteus is a genus of herbivorous dinosaur from the Late Jurassic. It is known only from vertebrae recovered from Kimmeridgian rocks in the Morrison Formation, Colorado.... |
Jurassic | herbivore | — |
Titanoceratops Titanoceratops Titanoceratops is a genus of herbivorous ceratopsian dinosaur. It was a giant chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now New Mexico, and the earliest known triceratopsin. It is known from the holotype OMNH 10165, a partial skeleton including... |
Cretaceous | herbivore | — |
Torosaurus Torosaurus Torosaurus is a genus of ceratopsid dinosaur that lived during the late Cretaceous period , between 70 and 65 million years ago. It possessed one of the largest skulls of any known land animal. The frilled skull reached in length... |
Cretaceous | herbivore | — |
Torvosaurus Torvosaurus Torvosaurus is a genus of large theropod dinosaur that lived during the Late Jurassic period... |
Jurassic | carnivore | — |
Trachodon Trachodon Trachodon is a dubious genus of hadrosaurid dinosaur based on teeth from the Campanian-age Upper Cretaceous Judith River Formation of Montana, U.S.A... |
Cretaceous | herbivore | Dubious, see article |
Triceratops Triceratops Triceratops is a genus of herbivorous ceratopsid dinosaur which lived during the late Maastrichtian stage of the Late Cretaceous Period, around 68 to 65 million years ago in what is now North America. It was one of the last dinosaur genera to appear before the great Cretaceous–Paleogene... |
Cretaceous | herbivore | — |
Troodon Troodon Troodon is a genus of relatively small, bird-like dinosaur from the Late Cretaceous period . Discovered in 1855, it was among the first dinosaurs found in North America... |
Cretaceous | carnivore | Includes Stenonychosaurus, Polyodontosaurus, and Pectinodon. |
Tyrannosaurus Tyrannosaurus Tyrannosaurus meaning "tyrant," and sauros meaning "lizard") is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex , commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other... |
Cretaceous | carnivore | — |
Utahceratops Utahceratops Utahceratops is a genus of herbivorous ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now Utah. Its fossils have been recovered from the Kaiparowits Formation. It was first named by Scott D. Sampson, Mark A. Loewen, Andrew A.... |
Cretaceous | herbivore | — |
Utahraptor Utahraptor Utahraptor is a genus of theropod dinosaurs, including the largest known members of the family Dromaeosauridae. Fossil specimens date to the upper Barremian stage of the early Cretaceous period... |
Cretaceous | carnivore | — |
Uteodon Uteodon Uteodon is a genus of herbivorous iguanodontian dinosaur. It is a basal iguanodontian which lived during the upper Jurassic period in what is now Uintah County, Utah. It is known from the middle of the Brushy Basin Member, Morrison Formation. This genus was named by Andrew T. McDonald in 2011 and... |
Jurassic | herbivore | — |
Vagaceratops Vagaceratops Vagaceratops is a genus of herbivorous ceratopsian dinosaur. It is a chasmosaurine ceratopsian which lived during the Late Cretaceous period in what is now Alberta. Its fossils have been recovered from the Upper Dinosaur Park Formation... |
Creataceous | herbivore | — |
Velafrons Velafrons Velafrons is a genus of lambeosaurine hadrosaurid dinosaur from the Late Cretaceous of Mexico. It is known from a mostly complete skull and partial skeleton of a juvenile individual, with a bony crest on the forehead... |
Cretaceous | herbivore | — |
Venenosaurus Venenosaurus Venenosaurus named after the Poison Strip Member of the Cedar Mountain Formation in Utah, where the fossils were discovered by a Denver Museum of Natural History volunteer Tony DiCroce in 1998. Venenosaurus dicrocei was first described as a new species in 2001 by Virginia Tidwell, Kenneth... |
Cretaceous | herbivore | — |
Wyomingraptor Wyomingraptor "Wyomingraptor" is the name unofficially ascribed to an allosaurid dinosaur from the Morrison Formation of the Late Jurassic. The few remains unearthed are labeled as Allosaurus in the Tate Museum. Robert Bakker, who discovered the fossils in 1997, has proposed the new name... |
Jurassic | carnivore | — |
Zephyrosaurus Zephyrosaurus Zephyrosaurus is a genus of hypsilophodont ornithopod dinosaur. It is based on a partial skull and postcranial fragments discovered in the Aptian-Albian-age Lower Cretaceous Cloverly Formation of Carbon County, Montana... |
Cretaceous | herbivore | — |
Zuniceratops Zuniceratops Zuniceratops was a ceratopsian dinosaur from the mid Turonian of the Late Cretaceous Period of what is now New Mexico, United States... |
Cretaceous | herbivore | — |
Key
Nomen dubium Nomen dubium In zoological nomenclature, a nomen dubium is a scientific name that is of unknown or doubtful application... |
Invalid |
Nomen nudum Nomen nudum The phrase nomen nudum is a Latin term, meaning "naked name", used in taxonomy... |
Timeline
This is a timeline of selected dinosaurs from the list above. Time is measured in Ma, megaannum, along the x-axis.Criteria for inclusion
- The creature must appear on the List of dinosaurs.
- Fossils of the creature must have been found in North AmericaNorth AmericaNorth America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
. - This list is a complement to :Category:Dinosaurs of North America.