MolluscaBase taxon details
original description
(of Pyramidula strigosa var. alpina Elrod, 1901) Elrod, M.J. (1901). Montana shells. Rocky Mountain Magazine, 11(3): 692-697, plate 4.
page(s): 696, figs [details]
original description
(of Pyramidula strigosa var. montana Elrod, 1902) Elrod, M.J. (1902). A biological reconnoissance in the vicinity of Flathead Lake. Bulletin University of Montana, 10: 91-182, plates 18-46.
page(s): 121 [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]
additional source
Hendricks, P. (1998). Rediscovery of Discus brunsoni Berry, 1955 and Oreohelix alpina (Elrod, 1901) in the Mission Mountains, Montana, with comments on Oreohelix elrodi (Pilsbry, 1900). <em>Nautilus.</em> 112(2): 58-62., available online at https://www.biodiversitylibrary.org/page/8272572 [details]