The Permian-Triassic extinction eliminated almost 90 percent of all species. The devastating loss came after violent volcanic ...

Imagine a world before dinosaurs, where the land was ruled by toothy predators with a terrifying bite. Long before the famous ...

During the Permian-Triassic extinction, Inostrancevia, a saber-toothed predator, emerged as a dominant force. Fossils ...

Imagine a world where furry mammals scuttle under the feet of gigantic dinosaurs, not yet destined to rule the Earth. It’s a ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period.