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  1. Osteology, function, and evolution of the Trematopsid (Amphibia: Labyrinthodontia) nasal region / [by] John R. Bolt --.
    By: Bolt, John R.,
    Publication info: Chicago :Field Museum of Natural History,1974.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Skull  Trematopsidae
    View record   View book
  2. A trematopsid skull from the Lower Permian, and analysis of some characters of the dissorophoid (Amphibia, Labyrinthodontia) otic notch / John R. Bolt.
    By: Bolt, John R.,
    Publication info: Chicago :Field Museum of Natural History,1974.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Comanche County  Oklahoma  Paleontology  Permian  Trematopsidae
    View record   View book
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