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  1. A new hydrozoan from the Pennsylvanian of Illinois / [by] Matthew H. Nitecki -- and Eugene S. Richardson, Jr. --
    By: Nitecki, Matthew H. - Richardson, Eugene Stanley,
    Publication info: Chicago :Field Museum of Natural History,1972.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Drevotella proteana  Illinois  Paleontology  Pennsylvanian  
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