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Date: 2008-05-08 18:49:20Extinction events Cretaceous Planetary science Climate history Dinosaurs Cretaceous–Tertiary extinction event K–T boundary Late Cretaceous Permian–Triassic extinction event Phanerozoic Geologic time scale Historical geology | Add to Reading ListSource URL: www.bio.sdsu.eduDownload Document from Source WebsiteFile Size: 313,89 KBShare Document on Facebook |