Biodiversity Heritage Library
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Subject "Burrowing animals, Fossil"
Permo-Carboniferous fresh water burrows / Everett C. Olson -- and Kathryn Bolles --.
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