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An alligator, or colloquially gator, is a large reptile in the genus Alligator of the family Alligatoridae of the order Crocodilia. The two extant species are the American alligator (A. mississippiensis) and the Chinese alligator (A. sinensis). Additionally, several extinct species of alligator are known from fossil remains.
The American alligator (Alligatormississippiensis), sometimes referred to as a gator or common alligator, is a large crocodilian reptile native to the Southeastern United States and a small section of northeastern Mexico. It is one of the two extant species in the genus Alligator, and is larger than the only other living alligator species, the ...
Genus Alligator – Cuvier, 1807 – two species Common name Scientific name and subspecies Range Size and ecology IUCN status and estimated population American alligator. A. mississippiensis Daudin, 1801: Southeastern United States: Size: up to 450 kg (990 lb) Habitat: Wetlands (inland), intertidal marine, and coastal marine [2] Diet: [2] LC
A. olseni fore limb. Alligator prenasalis fossil. The superfamily Alligatoroidea includes all crocodilians (fossil and extant) that are more closely related to the American alligator than to either the Nile crocodile or the gharial. [1] This is a stem-based definition for alligators, and is more inclusive than the crown group Alligatoridae. [2]
Alligatorinae is a subfamily within the family Alligatoridae that contains the alligators and their closest extinct relatives, and is the sister taxon to Caimaninae (the caimans). Many genera in Alligatorinae are described, but only the genus Alligator is still living, with the remaining genera extinct.
A caiman (/ ˈkeɪmən / (also spelled cayman[2]) from Taíno kaiman[3][additional citation (s) needed]) is an alligatorid belonging to the subfamily Caimaninae, one of two primary lineages within the Alligatoridae family, the other being alligators. Caimans are native to Central and South America and inhabit marshes, swamps, lakes, and ...
It and the American alligator (A. mississippiensis) are the only living species in the genus Alligator of the family Alligatoridae. Dark gray or black in color with a fully armored body, the Chinese alligator grows to 1.5–2.1 metres (5–7 ft) in length and weighs 36–45 kilograms (80–100 lb) as an adult.
The alligator gar (Atractosteus spatula) is a euryhaline ray-finned fish in the clade Ginglymodi of the infraclass Holostei / hoʊˈlɒstiaɪ /, being most closely related to the bowfins. It is the largest species in the gar family (Lepisosteidae), and is among the largest freshwater fish in North America. The fossil record traces its group's ...