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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.
Contributed by: University of Illinois Urbana Champaign
Subjects: Amphibians, Fossil Burrowing animals, Fossil Carboniferous Lung-fishes, Fossil Paleontology Permian Sedimentary structures United States
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Pseudo-organic structures from the Precambrian Bass limestone in Arizona / [by] Matthew H. Nitecki --
By: Nitecki, Matthew H.
Publication info: Chicago :Field Museum of Natural History,1971.
Contributed by: University of Illinois Urbana Champaign
Subjects: Arizona Geology, Stratigraphic Grand Canyon National Park Petrology Precambrian Sedimentary structures
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Sedimentary structures from the Carbondale Formation (Middle Pennsylvanian) of Northern Illinois / Charles W. Shabica --.
By: Shabica, Charles W.
Publication info: Chicago :Field Museum of Natural History,1978.
Contributed by: Field Museum Library
Subjects: Geology Geology, Stratigraphic Illinois Pennsylvanian Sedimentary structures
BHL Collections: Field Museum Library
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