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

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 ...