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  1. 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
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  2. Contributions to Pennsylvanian paleobotany Mazocarpon oedipternum, sp. nov. and Sigillarian relationships,
    By: Schopf, James Morton,
    Publication info: Urbana, Ill.,1941.
    Contributed by: University of Illinois Urbana Champaign
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  3. Contributions to Pennsylvanian paleobotany: Notes on the Lepidocarpaceae.
    By: Schopf, James Morton,
    Publication info: Urbana,1941.
    Contributed by: University of Illinois Urbana Champaign
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  4. The embryology of Larix,
    By: Schopf, James Morton,
    Publication info: Urbana,The University of Illinois Press,1943.
    Contributed by: University of Illinois Urbana Champaign
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  5. A new cycadophyte and its relatives /
    By: Schopf, James Morton,
    Publication info: Urbana, Ill. :State Geological Survey,1939.
    Contributed by: University of Illinois Urbana Champaign
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