Traits name details
original description
(of ) Say T. (1818). Account of two new genera, and several new species, of fresh water and land snails. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 1: 276-284., available online at http://biodiversitylibrary.org/page/24680546 page(s): 277 [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): 91 [details]
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