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.

A land predator that lived during the ill-fated Permian Period functioned like a “big cat,” such as a tiger or lion, that dominated its local food chain, according to the scientists behind a new ...

About 250 million years ago, Earth faced its greatest catastrophe. The End-Permian Event wiped out more than 80% of ocean ...

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.

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.

The Triassic Period (252-201 million years ago) began after Earth's worst-ever extinction event devastated life. The Permian-Triassic extinction event, also known as the Great Dying, took place ...

Whirling seeds are produced by many plants today, such as maples, but the first to try them were the conifers 270 million years ago. Fossils reveal that those early conifers had winged seeds of ...

As an extinction crisis wiped out species at the end of the Permian Period, a predatory species emerged that dominated Southern Africa’s domain. By Jeanne Timmons Some 252 million years ago, it ...

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 ...