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Permian Gastropoda of the southwestern United States
Author: Yochelson, Ellis L., 1928-2006
Year: 1960
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The Pennsylvanian gastropod genera Cyclozyga and Helminthozyga, and the classification of the Pseudozygopleuridae
Author: Hoare, Richard D.; Sturgeon, M. T.
Year: 1978
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New Pennsylvanian gastropods from Ohio
Author: Hoare, Richard D.
Year: 1980
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The Pennsylvanian gastropod genus Microtychis Longstaff in Ohio. Pennsylvanian pseudozygopleurid gastropods from the Appalachian Basin.
Author: Hoare, Richard D.; Sturgeon, M. T.
Year: 1981
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The Pennsylvanian gastropod Pseudozygopleura (Pseudozygopleura) from the Appalachian Basin. 2 / R.D. Hoare and M.T. Sturgeon. The Pennsylvanian gastropod genera Orthonema Meek and Worthen, and Streptacis Meek, from the Appalachian Basin / J.R. Anderson, R.D. Hoare and M.T. Sturgeon.
Author: Hoare, Richard D.; Sturgeon, M. T.; Anderson, J. R.
Year: 1985
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Gastropod Mollusca from the Tertiary strata of the West
Author: Cockerell, T. D. A.
Year: 1915
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The gastropods of the St. Louis, Missouri, Pennsylvanian Outlier: the Pseudozygopleurinae
Author: Knight, J. Brookes
Year: 1930
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Pennsylvanian pseudozygopleurid gastropod genus Gamizyga n.gen. from Ohio and West Virginia
Author: Hoare, Richard D.; Sturgeon, M. T.
Year: 1980
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Color patterns on Pennsylvanian gastropods from Ohio
Author: Hoare, Richard D.; Sturgeon, M. T.
Call no: RP19567
Year: 1978
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Permian Gastropoda of the southwestern United States : Subulitacea
Author: Erwin, Douglas H.
Call no: RP12773
Year: 1988
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Hoare, Richard D. (7)
Saul, Louella R. (7)
Yochelson, Ellis L., 1928 ... 2006 (7)
Squires, Richard L. (5)
Sturgeon, M. T. (5)
Erwin, Douglas H. (3)
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Yen, Teng ... chien (1)
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Subject
Gastropoda, Fossil ... United States (16)
Gastropoda, Fossil ... California (7)
Molluscs, Fossil ... America (7)
Gastropoda, Fossil ... Utah (3)
Geology, Stratigraphic ... United States (3)
Gastropoda, Fossil ... Michigan (2)
Geology, Stratigraphic ... Devonian (2)
Gastropoda, Fossil ... Arkansas (1)
Gastropoda, Fossil ... Dakota (1)
Gastropoda, Fossil ... Illinois (1)
Gastropoda, Fossil ... Kansas (1)
Gastropoda, Fossil ... Maine (1)
Gastropoda, Fossil ... Maryland (1)
Gastropoda, Fossil ... Oklahoma (1)
Gastropoda, Fossil ... Wyoming (1)
Geology, Stratigraphic ... Oklahoma (1)
Geology, Stratigraphic ... United States (1)
Geology, Stratigraphic ... Permian (1)
Geology, Stratigraphic ... Wyoming (1)
Geology, Stratigraphic ... United States (1)
Illinois State Geological Survey ... Catalogues and collections (1)
Molluscs, Fossil ... Utah (1)
Molluscs, Fossil ... Wyoming (1)
Palaeontology ... Jurassic (1)
Palaeontology ... Cretaceous (1)
Palaeontology ... Oligocene (1)
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