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  1. By: Simpson, George Gaylord, - Brown, Barnum, - Scarritt Patagonian Expedition
    Publication info: New York City, The American Museum of Natural History, [1933]
    Holding Institution: American Museum of Natural History Library
    Subjects: 56.9,6:14.71,5  Argentina  Brain  Casts  Hegetotherium mirabile  Litopterna  Mammals, Fossil  Notoungulata  Paleontology  Proterotherium cavum  Protypotherium  Río Gallegos Region  Skull  Ungulates, Fossil