The end of the _______ was marked by the largest mass extinction of life in the history of Earth.

Name: The end of the _______ was marked by the largest mass extinction of life in the history of Earth.
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The Permian period, which lasted from about 299 to 252 million years ago, ended with the Permian-Triassic extinction event, which caused the loss of over 90% of marine species and 70% of land species, making it the largest mass extinction in Earth's history.

The End of the _______ Was Marked by the Largest