Citing references, Longanecker said the Basin is named for the Permian Period 299 million to 251 million years ago, but it traces its origins to the Precambrian tectonic events of 1.3 billion to ...

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.

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 ...

The Permian period immediately predated the dinosaurs. Ronchi said he was also “surprised by the abundance and preservation” of the fossils when he first saw the images.

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.

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 ...

The so-called Great Dying at the end of the Permian Period around 252 million years ago is thought to have been brought about by unusually high volcanic activity that led to ocean acidification ...