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• 15:41, 1 January 2010 Swilliams talk contribs deleted page Permian–Triassic extinction event (content was: 'The '''Permian–Triassic (P–Tr) extinction event''', sometimes informally called the '''Great Dying''', was an extinction event that occurred {{Ma|251.4}},<ref name="Jin2000">{{cite journal|title=Pattern of Marine Mass Extinction ...')