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An alligator, or colloquially gator, is a large reptile in the genus Alligator of the family Alligatoridae in 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 Chinese alligator split from the American alligator about 33 million years ago [8] and likely descended from a lineage that crossed the Bering land bridge during the Neogene. The modern American alligator is well represented in the fossil record of the Pleistocene. [9] The alligator's full mitochondrial genome was sequenced in the 1990s. [10]
A live alligator named Albert first appeared at football games during the 1957 season, and served as the mascot of the football team on the field before the costumed version of Albert became the mascot in 1970. [1] He was joined by a female version, Alberta, in 1984. [2] They often appear as a couple, but also appear alone. [3]
Articles relating to the genus Alligator. 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.
There is a common belief stated throughout reptilian literature that crocodilians, including the American alligator, exhibit indeterminate growth, meaning the animal continues to grow for the duration of its life. However, these claims are largely based on assumptions and observations of juvenile and young adult crocodilians, and recent studies ...
Alligatorinae is cladistically defined as Alligator mississippiensis (the American alligator) and all species closer to it than to Caiman crocodylus (the spectacled caiman). [ 8 ] [ 9 ] This is a stem-based definition for Alligatorinae, and means that it includes more basal extinct alligator ancestors that are more closely related to living ...
An alligator nest at Everglades National Park, Florida, United States Alligator olseni forelimb Alligator prenasalis fossil. The superfamily Alligatoroidea is thought to have split from the crocodile-gharial lineage in the late Cretaceous, about 80 million years ago, but possibly as early as 100 million years ago based on molecular phylogenetics.
Animalia is an alliterative alphabet book and contains twenty-six illustrations, one for each letter of the alphabet. Each illustration features an animal from the animal kingdom (A is for alligator and armadillo, B is for butterfly, C is for cat, etc.) along with a short poem utilizing the letter of the page for many of the words.