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Date: 2003-05-16 20:04:38Geological history of Earth Phanerozoic Geology Climate history Evolutionary biology Geological ages Extinction events Extinction CretaceousPaleogene extinction event Cretaceous Background extinction rate Maastrichtian | J. Evol. Biol. 8:Add to Reading ListSource URL: www.bio.sdsu.eduDownload Document from Source WebsiteFile Size: 942,88 KBShare Document on Facebook |