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![]() Date: 2012-04-17 11:42:21Cenozoic Quaternary extinction event Megafauna Castoroides Pleistocene megafauna Extinction event Diprotodon Proboscidea Pleistocene Pleistocene extinctions Phanerozoic Geologic time scale | Source URL: biology.unm.eduDownload Document from Source WebsiteFile Size: 480,79 KBShare Document on Facebook |