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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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Ordovician Polyplacophora (Mollusca) from North America
Author: Hoare, Richard D.; Pojeta, John, Jr.
Year: 2006
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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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Pennsylvanian pseudozygopleurid gastropods in the collections of the Illinois State Geological Survey
Author: Hoare, Richard D.
Call no: RP19566
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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Relationships of the Devonian Strobilepis and related Pennsylvanian problematica
Author: Hoare, Richard D.; Mapes, Royal H.
Call no: RP23840
Year: 1995
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1978 (2)
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Gastropoda, Fossil ... United States (7)
Geology, Stratigraphic ... Pennsylvania (1)
Illinois State Geological Survey ... Catalogues and collections (1)
Molluscs, Fossil ... North America (1)
Molluscs, Fossil ... Pennsylvania (1)
Polyplacophora, Fossil (1)
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