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  1. By: Olson, Everett Claire, - Bolles, Kathryn.
    Publication info: Chicago, Field Museum of Natural History, 1975
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Amphibians, Fossil  Burrowing animals, Fossil  Carboniferous  Lung-fishes, Fossil  Paleontology  Permian  Sedimentary structures  United States  
  2. By: Nitecki, Matthew H.
    Publication info: Chicago, Field Museum of Natural History, 1971
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Arizona  Geology, Stratigraphic  Grand Canyon National Park  Petrology  Precambrian  Sedimentary structures  
  3. By: Shabica, Charles W.
    Publication info: Chicago, Field Museum of Natural History, 1978
    Holding Institution: Field Museum of Natural History Library
    Subjects: Geology  Geology, Stratigraphic  Illinois  Pennsylvanian  Sedimentary structures