Taxonomy

• Subfamily Alligatorinae
  • Genus Chrysochampsa
    Chrysochampsa
    Chrysochampsa is an extinct genus of alligatorine. Fossils have been found from the Golden Valley Formation of North Dakota and date back to the Wasatchian regional North American faunal stage of the early Eocene...
    
     (extinct)
  • Genus Hassiacosuchus
    Hassiacosuchus
    Hassiacosuchus is an extinct genus of small alligatorid from the early Eocene of Germany, found at the Messel pit. It was named in 1935 by K. Weitzel, and the type species is H. haupti. A second species, H. kayi, was named in 1941 by C.C. Mook for material from the Bridgerian of Wyoming, but was...
    
     (extinct)
  • Genus Navajosuchus
    Navajosuchus
    Navajosuchus is an extinct genus of alligatorine crocodylian. Its fossils have been found in the Paleocene-age Nacimiento Formation of the San Juan Basin, New Mexico . It was named in 1942 by Charles C. Mook, and the original type species was N. novomexicanus. N. novomexicanus was based on...
    
     (extinct)
  • Genus Ceratosuchus
    Ceratosuchus
    Ceratosuchus is an extinct genus of alligatorine from latest Paleocene rocks of Colorado's Piceance Basin and earliest Eocene rocks of Wyoming's Bighorn Basin in North America, a slice of time known as the Clarkforkian North American Land Mammal Age. Like its modern relatives, Ceratosuchus was a...
    
     (extinct)
  • Genus Allognathosuchus
    Allognathosuchus
    Allognathosuchus is an extinct genus of alligatorine crocodylian with a complicated taxonomic history. This small alligatorine is known for its stout jaws and bulbous teeth, found near the rear of the tooth row in upper and lower jaws. These adaptations have historically been interpreted as...
    
     (extinct)
  • Genus Arambourgia
    Arambourgia
    Arambourgia is an extinct genus of alligatorine crocodylian from Europe. It was named in 1905 and synonymized with Allognathosuchus haupti in 1990, but later reassigned as its own genus once again in 2004. It is thought to have been closely related to Hispanochampsa and Procaimanoidea...
    
     (extinct)
  • Genus Procaimanoidea
    Procaimanoidea
    Procaimanoidea is an extinct genus of alligatorid from the Eocene of North America. It was named posthumously in 1946 by Charles W. Gilmore; the type species is P. utahensis, from the Uintan of Utah. It is based on USNM 15996, a nearly complete skull and partial left hind leg. A second species,...
    
     (extinct)
  • Genus Wannaganosuchus
    Wannaganosuchus
    Wannaganosuchus is an extinct genus of small alligatorid...
    
     (extinct)
  • Genus Krabisuchus
    Krabisuchus
    Krabisuchus is an extinct alligatorine which existed in what is now Thailand during the late Eocene. It was first named by paleontologists Jeremy A. Martin and Komsorn Lauprasert in 2010, and the type species is K. siamogallicus...
    
     (extinct)
  • Genus Alligator
    Alligator
    An alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two extant alligator species: the American alligator and the Chinese alligator ....
    
    
    • Alligator prenasalis
      Alligator prenasalis
      Alligator prenasalis is an extinct species of alligator. It is well known, with many fossils having been collected from the Oligocene Chadron and Brule Formations in South Dakota. The species was first named in 1904 but was originally classified as a crocodile in the genus Crocodilus. It was...
      
       (extinct)
    • Alligator mcgrewi (extinct)
    • Alligator olseni (extinct)
    • Chinese Alligator
      Chinese Alligator
      The Chinese alligator or Alligator Alligator sinensis) is one of two known living species of Alligator, a genus in the family Alligatoridae. The Chinese alligator is native only to China...
      
      , Alligator sinensis
    • Alligator mefferdi (extinct)
    • American Alligator
      American Alligator
      The American alligator , sometimes referred to colloquially as a gator, is a reptile endemic only to the Southeastern United States. It is one of the two living species of alligator, in the genus Alligator, within the family Alligatoridae...
      
      , Alligator mississippiensis