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Date: 2013-10-17 12:15:10Extinction events Planetary science Climate history Evolutionary biology Impact events Permian–Triassic extinction event Cretaceous–Tertiary extinction event Mesozoic Holocene extinction Phanerozoic Geologic time scale Historical geology | Extinction Rates and Geological TimeAdd to Reading ListSource URL: openwetware.orgDownload Document from Source WebsiteFile Size: 471,97 KBShare Document on Facebook |