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Date: 2007-12-19 00:15:10Mesozoic Psittacosaurus Phanerozoic Synapsid Triconodonta Mammal R. robustus Tritylodontidae Paleozoology Repenomamus Triconodonts Paleontology | Add to Reading ListSource URL: bill.srnr.arizona.eduDownload Document from Source WebsiteFile Size: 386,65 KBShare Document on Facebook |