Long before T. rex, the Earth was dominated by super-carnivores stranger and more terrifying than anything dreamed up by ...

Triassic reptiles took 10,000 mile trips through 'hellish' conditions, ... were able to migrate up to 10,000 miles across inhospitable tropical regions following the end-Permian mass extinction.

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 ...