Rocks of that age contain traces of an asteroid that struck Earth, generating catastrophic events ... the end of the Permian are rare and often inaccessible. One site that preserves the ...

But this ancient event – known as the Great Dying ... species alive at the time may have gone extinct during the end-Permian extinction. Although the volcanic eruptions theory seemed to ...

Fossils from southern China provide evidence for a mass extinction during middle Permian time, 260 million years ago. The close association of this event with an outpouring of lava, initially into ...

Many scientists think a key culprit was widespread volcanic activity. Global warming triggered by heavy volcanic activity is hypothesized by some scientists to have caused the end-Triassic extinction ...

This graph plots extinction rates of marine animal families over the last 600 million years. The shaded band indicates the normal range of extinction rates, known as "background extinction.

At the end of the Permian some 250 million years ago, the worst extinction event so far with 96% of all known species lost. At the end of the Triassic some 201 million years ago, when 80% of all ...

Many scientists think a key culprit was widespread volcanic activity. Global warming triggered by heavy volcanic activity is hypothesized by some scientists to have caused the end-Triassic extinction ...

This is the biggest extinction event our planet has ever seen ... This not only marked the end of the Permian period and the start of the Triassic, it was such a serious catastrophe that it ...