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

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 ...

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.

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 ...

Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst of the five global catastrophic events in Earth’s history, more devastating, than the one ...

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.

A key reason the end- Permian extinction was so dire was because the mega El Niños created incredibly warm conditions in the tropics, which spread quickly to higher latitudes, resulting in the ...

“Geochemistry of the end-Permian extinction event in Austria and Italy: No evidence for an extraterrestrial component,” GEOLOGY, December 2004, v. 32, no. 12, p. 1053-1056.

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.