MolluscaBase name details
original description
Say, T. (1817). Descriptions of new species of land and fresh water shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 1 (6): 123-126., available online at https://www.biodiversitylibrary.org/page/24680373
page(s): 123 [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
Wetherby, A. G. (1895). New records of reversed American helices. <em>The Nautilus.</em> 9(8): 94., available online at https://www.biodiversitylibrary.org/page/1731439 [details]