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Vinony
Category

Anoxic events

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Permian-Triassic mass extinction
mass extinction event at the end of the Permian Period approximately 250 million years ago
anoxic event
intervals in the Earth's past
Cenomanian-Turonian boundary event
anoxic extinction events in the Cretaceous period, occurring at 91.5 ± 8.6 Ma
End-Ediacaran extinction
extinction event marking the end of the Proterozoic eon and the beginning of the Phanerozoic eon (as well as the Cambrian era)