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Date: 2015-04-04 09:40:18Deltatheridium Sinodelphys Herpetotheriidae Mammal classification Mammal Metatheria Opossum Paleocene Extinction Transitional fossils Mammals Marsupial | Add to Reading ListSource URL: rsbl.royalsocietypublishing.orgDownload Document from Source WebsiteFile Size: 280,93 KBShare Document on Facebook |