Timing of the Permian-Triassic biotic crisis: implications from new zircon U/Pb aga data (and their limitations)
The most profound biotic crisis in the Earth's history, causing the near extinction of both terrestrial and marine life, occurred at the end of the Permian period about 253 Myr ago and marks the Paleozoic-Mesozoic era boundary. The cause of this event is
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|Source:||Earth and Planetary Science Letters|
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