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

An illustration showing an extinct species of early reptile that lived during the Permian, the period to which the fossilized skin dates back. (Michael deBraga ) ...

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 ...

Triassic reptiles took 10,000 mile trips through “hellish” conditions, study suggests First study to consider how ancient reptiles dispersed across the Earth after end-Permian mass extinction ...

Mega El Niños could have intensified the world’s most devastating mass extinction, which ended the Permian Period 252 million years ago, a new study found.

As an extinction crisis wiped out species at the end of the Permian Period, a predatory species emerged that dominated Southern Africa’s domain.

The find, believed to date back to the Permian period, has revealed an array of well-preserved footprints belonging to ancient reptiles, amphibians, and insects.

A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the ...

There definitely were no muppets during the Permian Period, but there was a Kermit - or at least a forerunner of modern amphibians that has been named after the celebrity frog.

The skin is the oldest ever found for a group of animals collectively known as amniotes, which includes reptiles, birds and mammals — all terrestrial vertebrates except amphibians.

In the aftermath of the end-Permian extinction, about 250 million years ago, various groups of reptiles became aquatic hunters, populating the early Mesozoic seas.

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 ...