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1. en.wikipedia.org › wiki › Permian–Triassic_extinction_eventPermian–Triassic extinction event - Wikipedia

   en.wikipedia.org › wiki › Permian–Triassic_extinction_event

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   Hace 15 horas · Permian–Triassic boundary at Frazer Beach in New South Wales, with the End Permian extinction event located just above the coal layer. Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, the Latest Permian extinction event, the End-Permian extinction event, and colloquially as the Great Dying ...