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  1. The history of the Pelycosauria : with a description of the genus Dimetron, Cope /
    By: Baur, Georg, - Case, E. C. - American Philosophical Society.
    Publication info: Philadelphia :The Society,1899.
    Contributed by: Smithsonian Libraries
    Subjects: Paleontology  Pelycosauria  Permian  
    BHL Collections: Smithsonian Institution Libraries
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  2. Revision of the Pelycosauria of North America / by E.C. Case.
    By: Case, E. C.
    Publication info: Washington, D.C. :Carnegie Institution of Washington,1907.
    Contributed by: University of British Columbia Library (archive.org)
    Subjects: Pelycosauria  
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  3. The structure of the Columella auris in the Pelycosauria / by E. D. Cope.
    By: Cope, E. D.
    Publication info: [Washington :s.n.,1885].
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Columella auris  Pelycosauria  Reptiles, Fossil  
    BHL Collections: Bone Wars Collection | Ernst Mayr Library of the MCZ, Harvard University
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