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  1. By: Emerson, William K. - Allan Hancock Foundation.
    Publication info: New York, N.Y, American Museum of Natural History, [1956]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.4,2D  Classification  Dentalium (Tesseracme) hancocki  Mexico  Mollusks  Mollusks, Fossil  Pacific coast  Paleontology  Pleistocene  Scaphopoda  Scaphopoda, Fossil