Researchers have discovered a previously unknown species of a crocodile-like reptile that lived around 250 million years ago. The new species belongs to an extinct group of animals known as ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period. These land-dwelling creatures would later evolve into mammals, but their ...

A tiny fragment of bumpy fossil found in a cave in Oklahoma is now the oldest known piece of preserved skin, paleontologists reported Thursday in the journal Current Biology. The discovery allows ...

Researchers have uncovered the remains of a never-before-seen ancient creature in a discovery that sheds light on how a group of animals that includes dinosaurs and crocodiles survived the Earth's ...