Claim: Extreme Global Warming caused mass extintion event 252 million years ago

Watts Up With That?

From CAGE – CENTER FOR ARCTIC GAS HYDRATE, CLIMATE AND ENVIRONMENT and the unquestionable certainty about the past department:

Plot of extinction intensity (percentage of genera that are present in each interval of time but do not exist in the following interval) vs time in the past for marine genera.[1] Geological periods are annotated (by abbreviation and colour) above. The Permian–Triassic extinction event is the most significant event for marine genera, with just over 50% (according to this source) failing to survive. Plot of extinction intensity (percentage of genera that are present in each interval of time but do not exist in the following interval) vs time in the past for marine genera.[1] Geological periods are annotated (by abbreviation and colour) above. The Permian–Triassic extinction event is the most significant event for marine genera, with just over 50% (according to this source) failing to survive.

Extreme global warming  caused a severe mass extinction of life on Earth 252 million years ago. It took life up to 9 million years to recover. New study finds clues in the Arctic as to why this recovery took so long.

Arctic gives clues on worst mass extinction of life

96 percent of marine species, and 70 percent of terrestrial life died off in the Permian-Triassic extinction event…

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