Permian-Triassic Extinction (252 million years ago) β #1 in Top 10 Worst Extinction Events in History | Top10Grid
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Permian-Triassic Extinction (252 million years ago)
The "Great Dying" wiped out 96 percent of marine species and 70 percent of terrestrial vertebrates, triggered by massive Siberian volcanism that acidified oceans and stripped the ozone layer.
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