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Knight, J. B. (1931). The gastropods of the Saint Louis, Missouri, Pennsylvanian outlier: Aclisina and Streptacis. Journal of Paleontology. 5(1): 1−15, 2 pls.
Knight, J. B. (1931). The gastropods of the Saint Louis, Missouri, Pennsylvanian outlier: Aclisina and Streptacis. Journal of Paleontology. 5(1): 1−15, 2 pls.
