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): 128, pl. XIV, fig. 1, 11 [details]
basis of record
Korobkov, I.A. (1954). Справочник и методическое руководство по третичным моллюскам: пластинчатожаберные [= A handbook and methodical guide to Tertiary molluscs: Lamellibranchiata]. Gosudarstvennoye nauchno-tekhnicheskoye izdatel'stvo neftyanoy i gorno-toplivnoy literatury, Leningrad, 444 pp., available online at https://www.geokniga.org/books/6177
page(s): 99 [details]
From editor or global species database
Type locality USA, Coos Bay, Oregon [details]