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  1. Pennsylvanian spores of Illinois and their use in correlation / by Robert M. Kosanke.
    By: Kosanke, Robert M. - Illinois State Geological Survey.
    Publication info: Urbana, Ill. :State Geological Survey,1950.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Coal  Geology  Illinois  Paleobotany  Pennsylvanian  Plant spores, Fossil  
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  2. Key to the Quaternary pollen and spores of the Great Lakes region /
    By: McAndrews, John H. - Berti, Albert A. - Norris, Geoffrey. - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1973.
    Contributed by: Royal Ontario Museum (archive.org)
    Subjects: Great Lakes Region  Paleobotany  Plant spores, Fossil  Pollen, Fossil  Quaternary  
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  3. Spores in strata of late Pennsylvanian cyclothems in the Illinois Basin /
    By: Peppers, Russel A. - Illinois State Geological Survey.
    Publication info: Urbana, Ill. :Illinois State Geological Survey,1964.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Coal  Geology, Stratigraphic  Illinois  Paleobotany  Pennsylvanian  Plant spores, Fossil  
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  4. An annotated synopsis of paleozoic fossil spores : and the definition of generic groups /
    By: Schopf, James Morton, - Bentall, Ray, - Wilson, L. R.
    Publication info: Urbana :Illinois State Geological Survey,1944.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Micropaleontology  Paleobotany  Paleozoic  Plant spores, Fossil  
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