Firby, J. R. (1963). A new genus of planorbid gastropods from the "Esmeralda Formation" of Nevada. <em>Journal of Paleontology.</em> 37(5): 1120-1122. page(s): 1121 [details] Available for editors [request]
original descriptionFirby, J. R. (1963). A new genus of planorbid gastropods from the "Esmeralda Formation" of Nevada. <em>Journal of Paleontology.</em> 37(5): 1120-1122. page(s): 1121 [details] Available for editors [request]
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