Two hundred and fifty one million years ago, the worst mass extinction event Planet Earth has ever seen ruined the life of ...

About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction—the most extreme event of its kind in Earth's history. What followed was a ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period.

Beneath the towering Guadalupe Mountains of Texas lies a dramatic story of transformation. Once part of an ancient sea, the fossilized Capitan Reef now forms craggy peaks and iconic cliffs like El ...

However, clams took over the oceans in the aftermath of the end-Permian extinction, along with oysters, snails, and slugs. Earth’s largest mass extinction eliminated a lot of marine species. But it ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a halt ...

For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

Some of these took place during the Mesozoic Era. The Mesozoic Era began with the Earth’s worst-ever extinction event. It is referred to as the Permian-Triassic extinction event because it spanned ...

Scientists have predicted that Earth will undergo a mass extinction in 250 million years, with extreme heat and rising CO2 ...