About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas survived. On land ...

The two biggest extinctions were at the end of the Permian Period, about 250 million years ago, and at the end of the Cretaceous, some 65 million years ago. The Permian extinction saw the loss of ...

As reported by Futura-sciences, researchers have identified the remains of a complete ecosystem dating from the Permian period ... Futura-sciences - Illustration: Pixabay) Be sure to read all ...

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 ...

Life in the Triassic period had a rough start. In the Permian period before, the largest mass extinction event in Earth’s history had just taken place. Despite the widespread devastation ...