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Date: 2005-09-08 11:24:19Mesozoic Ceratopsians Psittacosaurus Phanerozoic Synapsid Triconodonta Mammal R. robustus Tritylodontidae Repenomamus Triconodonts Paleontology | letters to nature ..............................................................Add to Reading ListSource URL: www.webpages.uidaho.eduDownload Document from Source WebsiteFile Size: 390,62 KBShare Document on Facebook |