Evidence That Earth's First Mass Extinction Was Caused by Critters, Not Catastrophe

Wednesday, September 2, 2015 - 12:30 in Paleontology & Archaeology

In the popular mind, mass extinctions are associated with catastrophic events, like giant meteorite impacts and volcanic super-eruptions. But the world's first known mass extinction, which took place about 540 million years ago, now appears to have had a more subtle cause: evolution itself. "People have been slow to recognize that biological organisms can also drive mass extinction," said Simon Darroch, assistant professor of earth and environmental sciences at Vanderbilt University.

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