MolluscaBase name details
original description
Dall, W. H. (1909). Contributions to the Tertiary Palaeontology of the Pacific coast. The Miocene of Astoria and Coos Bay, Oregon. <em>Professional Papers, United States Geological Survey.</em> 59: 1-278., available online at https://pubs.usgs.gov/pp/0059/report.pdf page(s): 119 [details] 
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