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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.
Family Alligatoridae. Subfamily Alligatorinae. Genus Alligator † Alligator hailensis † Alligator mcgrewi † Alligator mefferdi;
The American alligator is a relatively large species of crocodilian. On average, it is the largest species in the family Alligatoridae, with only the black caiman being possibly larger. [20] Weight varies considerably depending on length, age, health, season, and available food sources.
As a crown group, Alligatoridae only includes the last common ancestor of all extant (living) alligators, caimans, and their descendants (living or extinct), whereas Alligatoroidea, as a stem group, also includes more basal extinct alligator ancestors that are more closely related to living alligators than to crocodiles or gavialids.
The largest member of the family Alligatoridae is the Black caiman (Melanosuchus niger) with the American alligator (Alligator mississippiensis) sometimes growing to similar lengths. Black caimans can reach more than 5 m (16 ft) in length and weigh up to 750 kg (1,650 lb). [ 129 ]
Family Alligatoridae (Alligators and caimans) Genus Alligator: two species; Genus Caiman: three species; Genus Melanosuchus: one species; Genus Paleosuchus: two species;
The spectacled caiman (Caiman crocodilus), also known as the white caiman, [6] common caiman, [7] and speckled caiman, [8] is a crocodilian in the family Alligatoridae.It is brownish-, greenish-, or yellowish-gray colored and has a spectacle-like ridge between its eyes, which is where its common name come from.
Articles about taxa in the family Alligatoridae, which includes the alligators and caimans. Subcategories. This category has only the following subcategory. A.