About 250 million years ago, at the end of the Permian period ... identify the killer responsible for the largest of the many mass extinctions that have struck the planet. The most famous die ...

The five peaks show the "Big Five" mass extinction events, when extinction rates sharply exceeded background rates. These occurred at the end of the Ordivician, the Late Devonian, the Permian ...

Fossils from southern China provide evidence for a mass extinction ... Among the stratigraphic observations offered in support of crustal doming are marked thinning of middle Permian carbonate ...

Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst of the five global ...

Mass extinctions are defined by ... 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 ...