MolluscaBase name details
original description
(of Polygyra columbiana depressa Pilsbry & J. Henderson, 1936) Pilsbry, H. A. & Henderson, J. (1936). <i>Polygyra columbiana depressa</i>, new subspecies, from Oregon. <em>The Nautilus.</em> 49(4): 134, pl. 7, fig. 2., available online at https://www.biodiversitylibrary.org/page/8527777 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project.
page(s): 134, pl. 7, fig. 2 [details]