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By: Hunt, Robert M.,Edition:Publication info: New York, NY American Museum of Natural History c2005Volume: no.3486 (2005)Series:Holding Institution: American Museum of Natural History LibrarySubjects: Geology Geology, Stratigraphic Goshen County Great Plains Mammals, Fossil Miocene Nebraska Paleontology Perissodactyla, Fossil Rocky Mountains Sioux County Sioux County. Stratigraphic correlation Tylocephalonyx WyomingBHL Collections: