最終更新日：2022/12/07

Permian-Triassic extinction

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(evolutionary theory, geology) A volcanic mass extinction at the end of the Permian period 251.9 million years ago.

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Permian-Triassic extinction

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(evolutionary theory, geology) A volcanic mass extinction at the end of the Permian period 251.9 million years ago.

The Permian-Triassic extinction is considered one of the most devastating mass extinctions in Earth's history.

意味（1）

(evolutionary theory, geology) A volcanic mass extinction at the end of the Permian period 251.9 million years ago.