She believes that the Permian extinction was caused by acid rain following ... a dog and a lizard—the synapsids were Earth's first great dynasty of land vertebrates. "We've found fossils of ...

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

Travel back in time even further to around 250 million years ago, and the Great Dying – more formally known as the Permian-Triassic extinction event – wiped out members of all classes of life.

when extinction rates sharply exceeded background rates. These occurred at the end of the Ordivician, the Late Devonian, the Permian/Triassic (P/Tr) boundary, the end of the Triassic, and the ...

Figuring out what caused these mass extinctions has attracted a great deal of scientific interest ... the Emeishan region that span the middle Permian 4. The lower parts of these sections are ...

This shows paleogeography during the Permian-Triassic boundary extinction 252 million years ago. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...

Extinction is a natural part of life on Earth. But occasionally, extinction rates have surged far beyond usual levels, driving mass extinction events that have reshaped the trajectory of life. After a ...

Life that survived the so-called Great Dying repopulated the planet ... and sea urchins that survived the Permian extinction and were quickly diversifying. The first corals appeared, though ...

The end Permian extinction and disappearance of Glossopteris flora occurs at the top of the coal (black layer).

The lizard lives in a very small area of West Texas and southeastern New Mexico overlaying a part of the Permian Basin, which over the last ... This destruction in turn is the main cause of the ...