(ofHelix lasmodon Phillips, 1841)Phillips, J.S. (1841). Descriptions of two new American species of the genus Helix. Proceedings of the Academy of Natural Sciences of Philadelphia, 1(3): 27-28. page(s): 28 [details]
original description(ofHelix lasmodon Phillips, 1841)Phillips, J.S. (1841). Descriptions of two new American species of the genus Helix. Proceedings of the Academy of Natural Sciences of Philadelphia, 1(3): 27-28. page(s): 28 [details]
original description(ofZonites elasmodon W. G. Binney, 1885)Binney, W.G. (1885). A manual of American land shells. Bulletin of the United States National Museum, 28: 1-528. page(s): 28 [details]
basis of recordInvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]