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By: Radinsky, Leonard B.Edition:Publication info: New York, N.Y, American Museum of Natural History, [1967]Volume: no. 2313Series:Holding Institution: American Museum of Natural History LibrarySubjects: 56.9,72H Chasmotherium Eocene Eurasia Evolution Helaletidae Hyrachyus Mammals, Fossil Paleontology Perissodactyla West (U.S.) WyomingBHL Collections: