Traits taxon details
original description
(of ) Pilsbry, H. A. (1940). Land Mollusca of North America (north of Mexico). Volume I Part 2. <em>The Academy of Natural Sciences of Philadelphia Monographs.</em> 3: i-vii, 575-994, i-ix. Philadelphia [1 August]. [details]
basis of record
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): 93 [details]
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