Dinosaurs ruled the Earth for over 150 million years. Compared to the mere 4–6 million years that scientists believe humans ...

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

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

an order of old carnivorous therapsids. It was distinguished by its huge, saber-like canines and robust, massive body. Its leathery skin probably looked similar to that of today's elephants or ...

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

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