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By: Skinner, Morris F. - Taylor, Beryl E. - Gidley, James Williams, - Matthew, William Diller,Edition:Publication info: New York, N.Y, American Museum of Natural History, [1967]Volume: no. 2300Series:Holding Institution: American Museum of Natural History LibrarySubjects: 56(78.3) Brule County Formations (Geology) Geology Geology, Stratigraphic Mammals, Fossil Paleontology South Dakota TertiaryBHL Collections: