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  1. By: Simpson, George Gaylord, - Scarritt Patagonian Expedition
    Publication info: New York City, The American Museum of Natural History, [1933]
    Holding Institution: American Museum of Natural History Library
    Subjects: 56.9:14.71,5  Brain  Casts  Mammals, Fossil  Notostylops  Paleontology  Phenacodus primaevus  Rhyphodon  Skull  South America  Ungulates, Fossil