MolluscaBase taxon details
original description
(of Helix monodon Rackett, 1821) Rackett, T. (1821). Description of some shells found in Canada. Transactions of the Linnean Society of London, 13: 42-43, plate 5.
page(s): 42, pl. 5, fig. 2 [details]
original description
(of Helix leaii A. Binney, 1840) Binney, A. (1840). A monograph of the helices inhabiting the United States. <em>Boston Journal of Natural History.</em> 3(3): 353-394, pls 7-19, 26., available online at https://biodiversitylibrary.org/page/32416090
page(s): 362 [details]
original description
(of Polygyra monodon var. peoriensis F. C. Baker, 1927) Baker, F. C. (1927). Descriptions of new forms of Pleistocene land mollusks from Illinois with remarks on other species. <em>The Nautilus.</em> 40(4): 114-120., available online at https://www.biodiversitylibrary.org/page/8523251
page(s): 116 [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]