MolluscaBase taxon details
original description
(of Carocolla helicoides I. Lea, 1831) Lea, I. (1831). Observations on the naïades, and descriptions of new species of that and other families. <em>Transactions of the American Philosophical Society.</em> (NS) 4: 63-121, plates 3-18., available online at http://biodiversitylibrary.org/page/24786630
page(s): 103, pl. 15, fig. 34, a-c [details]
original description
(of Helix obstricta Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337
page(s): 154 [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]
From editor or global species database