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By: Simpson, George Gaylord, - Cope, E. D. (Edward Drinker),Edition:Publication info: New York, N.Y, American Museum of Natural History, [1959]Volume: no. 1957Series:Holding Institution: American Museum of Natural History LibrarySubjects: 56.9(1181:78.9) Geology Geology, Stratigraphic Mammals, Fossil New Mexico Paleocene Paleontology San Juan Basin (N.M. and Colo.)BHL Collections: