MolluscaBase taxon details
original description
(of Polygyra ashmuni Dall, 1897) Dall, W. H. (1897). Report on the mollusks collected by the International Boundary Commission of the United States and Mexico, 1892-1894. <em>Proceedings of the United States National Museum.</em> 19(1111): 333-379, pls. 31-33 (27 January 1897)., available online at https://www.biodiversitylibrary.org/page/7295173
page(s): 342-343 [details]
original description
(of Ashmunella ashmuni robusta Pilsbry, 1905) Pilsbry, H. A. (1905). Mollusca of the southwestern United States, I: Urocoptidae; Helicidae of Arizona and New Mexico. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 57: 211-290, plates 11-27., available online at https://www.biodiversitylibrary.org/page/6331573
page(s): 233, pl. 12, figs. 24-25 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]