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Extinction 2: Late Devonian, caused by ???????. 22% of marine families and 57% of marine genera. 19% of families lost. 364 million years ago.
Extinction 3: Permian-Triassic, caused by asteroid impact (maybe), volcanoes (maybe), and impact causing volcanoes (maybe). Worst, 95% of species, 53% of marine families, 84% of marine genera, 70% of land animals. 54% of all families lost. 251 million years ago.
Extinction 4: End Triassic, caused by massive floods of lava, possibly causing global warming. 22% of marine families, 52% of marine genera, 23% of all families lost. 199 to 214 million years ago.
Extinction 5: Cretaceous-Tertiary, caused by asteroid impact. 16% of marine families, 47% marine genera, 18% land animals, 17% of all families. 65 million years ago.
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