The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.

Fossils from China’s Turpan-Hami Basin reveal it was a rare land refuge during the end-Permian extinction, with fast ...

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 these geological Periods. You may also see it ...

A newly published review of 252-million-year-old fossils from southwest Germany is offering a deeper understanding of life’s ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

After Earth's worst mass extinction, surviving ocean animals spread worldwide. Stanford's model shows why this happened.

Fossils before and after the end-Permian extinction "go from richly diverse ... that surpass even those seen in the earliest Triassic, which has been the greatest homogenization event to date ...

For millions of years after the end-Permian mass extinction, the same few marine survivor species show up as fossils all over the planet. A new study reveals what drove this global biological ...

The mass extinction that killed 80% of life on ... Yang and his colleagues found that during the late Permian and early Triassic, the climate became a bit drier in what is now Xinjiang — but ...