Archosaurs have a nearly 250 million year record that originated shortly after the Permian-Triassic extinction event and is continued today by two extant clades, the crocodylians and the avians. The ...

Papers from the First Symposium of Early Archosaur Evolution, held during the IV Congreso Latinoamericano de Paleontología de Vertebrados, in San Juan, Argentina, September 2011. (Page 1 and page [4] ...

This photo shows the fossilized cervical vertebra and overlaying osteoderms of the new archosaur species Mambachiton fiandohana. Credit: Sterling, et. al Researchers have described a new species of ...

Long before dinosaurs became dominant, the Triassic world was ruled by archosaurs whose true behavior is still debated by ...

A set of Triassic archosaur fossils, excavated in the 1960s in Tanzania, have been formally recognised as a distinct species, representing one of the earliest-known members of the crocodile ...

Scientists have identified one of the earliest known dinosaur relatives — and it doesn’t look anything like they expected. Researchers had thought that the oldest dinosaur cousins would look rather ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Researchers have uncovered the remains of a never-before-seen ancient ...

Researchers have described a new species of armored reptile that lived near the time of the first appearance of dinosaurs. With bony plates on its backbone, this archosaur fossil reveals that armor ...