From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Temporal range: Upper Cretaceous – Recent
Crocodylus acutus mexico 01.jpg
American crocodile (Crocodylus acutus)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
(unranked): Archosauria
Superorder: Crocodylomorpha
Order: Crocodilia
Owen, 1842

The Order Crocodilia is a group of Archosaur reptiles. There are three living families.

Crocodiles are the nearest living relatives to birds, because they are both survivors of the Archosaurs.

Crocodiles are first found in the Upper Cretaceous period. They are descendents of a much wider group of Archosaurs called the Crocodylomorphs. These, in the Upper Triassic, were slender land-living forms, the sister group of the dinosaurs.

The Crocodylomorphs, in turn, were part of an even larger group, the Crurotarsi, which are first seen early in the Triassic.

Taxonomy[change | change source]

Distribution of crocodiles