jan 1, 252000000 BC - Permian-Triassic Extinction

Description:

252-251 million years ago is where the permian-triassic extinction took place.

https://www.britannica.com/science/Permian-extinction

https://www.nationalgeographic.com/science/prehistoric-world/permian-extinction/?user.testname=none

Added to timeline:

26 Oct 2018

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geologic time scale

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