Traits taxon details
original description
(of ) 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): 100, pl. 3/2, 11 [details] 
basis of record
Hickman, C. S. (1980). Paleogene marine gastropods of the Keasey Formation in Oregon. <em>Bulletins of American Paleontology.</em> 78(310): 1-112, 10 pls., available online at https://www.biodiversitylibrary.org/page/10693143 [details]
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