MolluscaBase taxon details
original description
(of Polygyra columbiana pilosa J. Henderson, 1928) Henderson, J. (1928). <i>Polygyra columbiana pilosa</i>, new subspecies. <em>The Nautilus.</em> 41(4): 143., available online at https://www.biodiversitylibrary.org/page/8519878
page(s): 143 [details]
basis of record
Roth, B. & Sadeghian, P.S. (2003). Checklist of the land snails and slugs of California. <em>Santa Barbara Museum of Natural History, Contributions in Science.</em> 3: 1-81.
page(s): 37 [details] Available for editors [request]
additional source
Emberton, K. C. (1995). When shells do not tell: 145 million years of evolution in North America's polygyrid land snails, with a revision and conservation priorities. <em>Malacologia.</em> 37(1): 69-110. Ann Arbor., available online at https://www.biodiversitylibrary.org/page/13113494
page(s): 86-87 [details]