original description(ofMargarites (Pupillaria) Dall, 1909)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 athttps://pubs.usgs.gov/pp/0059/report.pdf page(s): 97 [details]