Since the first sharks emerged in the world’s oceans nearly half a billion years ago, the world has gone through five major ...

The Permian began some 299 to 251 million years ago, when all the land on Earth had coalesced into a single, rabbit-shaped lump – the supercontinent Pangaea – surrounded by a vast, global ...

The End-Permian mass extinction was caused by a much more extreme disaster than present-day climate change. Back then, the poles’ ice caps completely disappeared, which would translate to a 230 ...

Scientists don't call it the "Great Dying" for nothing. About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction—the most extreme event of ...

The Permian extinction saw the loss of 80 to 96 percent of all marine species. In the Cretaceous event, perhaps 60 to 75 percent of marine species disappeared. What caused these immense die-offs?

The most famous of these mass extinction events — when an asteroid slammed into Earth 66 million years ago, dooming the dinosaurs and many other species — is also the most recent.

This occurred at the end of the Permian period and the start of the Triassic. At the end of the Triassic, another mass extinction occurred. This time, 80% of the Earth's species died off.

Still, the fossil record leaves no doubt that a mass extinction occurred 251.4 million years ago, ending the Permian Period and emptying the world of most of its life forms before the onset of the ...

During the end-Permian extinction 95 percent of all species on Earth became extinct, compared to only 75 percent during the K-T when a large asteroid apparently caused the dinosaurs to disappear.

Back in the Permian, the synapsids were utterly unlike anything which had come before. And one of the features that really set them apart from the competition was their mouthfuls of teeth.

The most famous of these mass extinction events — when an asteroid slammed into Earth 66 million years ago, dooming the dinosaurs and many other species — is also the most recent.

The most famous of these mass extinction events — when an asteroid slammed into Earth 66 million years ago, dooming the dinosaurs and many other species — is also the most recent.