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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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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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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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