Traits name details
original description
(of ) Metcalf, A. L. & Riskind, D. H. (1978). Four new species of Polygyra (Gastropoda, Pulmonata, Polygyridae) from Coahuila, Mexico. <em>Proceedings of the Biological Society of Washington.</em> 91:815–827., available online at https://www.biodiversitylibrary.org/page/34602098 page(s): 817 [details] Available for editors 
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]
|