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†Pyrgozyga Knight 1930
urn:lsid:organismnames.com:name:3187634
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†Pyrgozyga Knight 1930
Knight 1930. The Gastropods of the St. Louis, Missouri, Pennsylvanian Outlies : The Pseudozygopleurinae. Journal of Paleontology Sharon, 4(suppl. 1) 1930: pp. 1-88