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By: Emerson, William K. - Allan Hancock Foundation.Edition:Publication info: New York, N.Y, American Museum of Natural History, [1956]Volume: no. 1787Series:Holding Institution: American Museum of Natural History LibrarySubjects: 59.4,2D Classification Dentalium (Tesseracme) hancocki Mexico Mollusks Mollusks, Fossil Pacific coast Paleontology Pleistocene Scaphopoda Scaphopoda, FossilBHL Collections: