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Protungulatum donnae

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Protungulatum donnae
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{{Italic title}}{{Taxobox|name = Protungulatum
Late Cretaceous - Paleocene, {{fossilrange>Maastrichtianearliest=Campanian}}Possible Campanian record| image = Protungulatum donnae.JPG| image_width = 250px| image_caption = Jaw|regnum = Animalia|phylum = Chordata|classis = Mammalia|infraclassis = Eutheria|genus = ProtungulatumLeigh Van Valen>Van Valen, 1965|species = P. donnae }}Protungulatum donnae is the type species for the genus Protungulatum, an extinct early form of eutherian mammal. Though it is by no means the earliest mammal in the fossil record, a 2013 study considers P. donnae to be the oldest undisputed placental mammal fossil,JOURNAL, O'Leary, Maureen A., Bloch, Jonathan I., Flynn, John J., Gaudin, Timothy J., Giallombardo, Andres, Giannini, Norberto P., Goldberg, Suzann L., Kraatz, Brian P., Luo, Zhe-Xi, Meng, Jin, Novacek, Michael J., Perini, Fernando A., Randall, Zachary S., Rougier, Guillermo, Sargis, Eric J., Silcox, Mary T., Simmons, Nancy b., Spaulding, Micelle, Velazco, Paul M., Weksler, Marcelo, Wible, John r., Cirranello, Andrea L., The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals, 8 February 2013, Science (journal), Science, 339, 662–667, 10.1126/science.1229237, 6120, 2013Sci...339..662O, 23393258, WEB, Wilford, John Noble, Rat-Size Ancestor Said to Link Man and Beast,weblink 7 February 2013, New York Times, 9 February 2013, though more recent examinations conclude that it was a more basal eutherian and that no placental predates the Paleocene.JOURNAL, 10.1111/brv.12242, 28075073, Resolving the relationships of Paleocene placental mammals, 2015, Biological Reviews, 92, 1, 521–550, Halliday, Thomas J. D.,

References

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