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  1. By: Gaffney, Eugene S.
    Publication info: Chicago, Field Museum of Natural History, 1975
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Anatomy  Classification  Reptiles  Skull  Snapping turtles  Turtles
  1. By: Williams, Ernest E. (Ernest Edward)
    Type: Article
    In: Breviora
    Volume: 2
    Issue: 2
    Date: 1952
    Page Range: 1-16
    Publication Info: Cambridge, Mass Museum of Comparative Zoology, Harvard University [1952-
    Subjects: Anatomy  Fossils  Skull  Snapping turtles  South Dakota  Testudinidae, Fossil  Turtles, Fossil