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Knight J.B. (1933). The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: V. The Trocho-Turbinidae. Journal of Paleontology. 7(1): 30-58.
Knight J.B. (1933). The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: V. The Trocho-Turbinidae. Journal of Paleontology. 7(1): 30-58.
