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![]() Date: 2008-11-30 15:06:28Geologic time scale Ursinae Tremarctinae Agriotherium Tremarctos floridanus Hemicyoninae Arctodus Ursavus Tremarctos Bears Cenozoic Phanerozoic | Source URL: www.bearbiology.comDownload Document from Source WebsiteFile Size: 493,58 KBShare Document on Facebook |