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By: Emry, Robert J. - Dawson, Mary R. - Skinner, Morris F. - Galusha, TedEdition:Publication info: New York, N.Y, American Museum of Natural History, [1972]Volume: no. 2508Series:Holding Institution: American Museum of Natural History LibrarySubjects: Mammals, Fossil Muridae, Fossil Nanomys simplicidens Natrona County Oligocene Paleontology Rodents, Fossil WyomingBHL Collections: