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  1. By: Haas, Otto,
    Publication info: New York, American Museum of Natural History, [1951]
    Holding Institution: American Museum of Natural History Library
    Subjects: 56.4,53(117:73W)  Ammonoidea  Bighorn Mountains (Wyo. and Mont.)  Cretaceous  Dunveganoceras  Itasca County  Minnesota  Mollusks, Fossil  Paleontology  Wyoming