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Three extant crocodilian species clockwise from top-left: saltwater crocodile (Crocodylus porosus), American alligator (Alligator mississippiensis), and gharial (Gavialis gangeticus) Crocodilia is an order of mostly large, predatory , semiaquatic reptiles , which includes true crocodiles , the alligators , and caimans ; as well as the gharial ...
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Crocodiles (family Crocodylidae) or true crocodiles are large, semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia.The term “crocodile” is sometimes used more loosely to include all extant members of the order Crocodilia, which includes the alligators and caimans (both members of the family Alligatoridae), the gharial and false gharial (both ...
† Crocodylus checchiai is an extinct crocodile from Late Miocene of Kenya. † Crocodylus falconensis is an extinct crocodile from Early Pliocene of Venezuela. † Crocodylus palaeindicus is an extinct crocodile the Miocene to the Pleistocene of southern Asia. † Crocodylus thorbjarnarsoni is an extinct crocodile from Plio-Pleistocene of Kenya.
Crocodylomorpha in the modern sense, as defined by Paul Sereno in 2005, is phylogenetically defined as the most inclusive clade containing Crocodylus niloticus (the Nile crocodile), but not Rauisuchus tiradentes, Poposaurus gracilis, Gracilisuchus stipanicicorum, Prestosuchus chiniquensis, or Aetosaurus ferratus.
Crocodylinae is a subfamily of true crocodiles within the family Crocodylidae, and is the sister taxon to Osteolaeminae (dwarf crocodiles and slender-snouted crocodiles). Taxonomy [ edit ]
The American crocodile is also one of the largest crocodile species, with large males in the southern part of their range reported to approach 6.1 m (20 ft) in size. Based on projections from various skulls, the largest males may have reached 6–7 m (20–23 ft) in length, and their predicted mass reached up to 1,283 kg (2,829 lb). [ 120 ]
Cladistically, it is defined as Crocodylus niloticus (the Nile crocodile) and all crocodylians more closely related to C. niloticus than to either Alligator mississippiensis (the American alligator) or Gavialis gangeticus (the gharial). [5] This is a stem-based definition for crocodiles, and is more inclusive than the crown group Crocodylidae. [3]