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By: Baur, Georg, - Case, E. C. (Ermine Cowles), - American Philosophical Society.Edition:Publication info: Philadelphia, The Society, 1899Volume:Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects: Paleontology Pelycosauria PermianBHL Collections:
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By: Case, E. C. (Ermine Cowles),Edition:Publication info: Washington, D.C, Carnegie Institution of Washington, 1907Volume:Series:Holding Institution: University of British Columbia LibrarySubjects: PelycosauriaBHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection
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By: Cope, E. D. (Edward Drinker),Edition:Publication info: [Washington, 1885]Volume:Series:Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr LibrarySubjects: Columella auris Pelycosauria Reptiles, FossilBHL Collections: Bone Wars Collection