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 ...

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 ...

Extinct archosaurs' eggshell porosity may be used as a proxy for predicting covered or exposed nest types, according to a new study. Extinct archosaurs' eggshell porosity may be used as a proxy for ...

Extinct archosaurs' eggshell porosity may be used as a proxy for predicting covered or exposed nest types, according to a study published November 25, 2015 in the open-access journal PLOS ONE by Kohei ...

It’s not a bird. It’s not a dinosaur. It’s not a crocodile. Teleocrater rhadinus might not fit into any of those tidy, familiar groups—but it does fit into the category of “once-in-a-lifetime fossil ...

A fresh analysis of a fossil found in the 1970s suggests that the family trees for crocodiles, birds and dinosaurs diverged earlier than some may have thought. Subscribe to read this story ad-free Get ...

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 ...

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 ...