MolluscaBase taxon details
original description
(of Anguispira clarki Vanatta, 1924) Vanatta, E. G. (1925). Four new species of shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 76: 423-425. ["1924"; February 1925].
page(s): 423, fig. 4 [details]
original description
(of Helix alternata var. fergusoni Bland, 1862) Bland, T. (1861). Remarks on certain species of North American Helicidae. <em>Annals of the Lyceum of Natural History of New York.</em> 7(30): 420-446 (Dec. 1861), 7(31): 447-448, plate 4 (Feb. 1862)., available online at https://www.biodiversitylibrary.org/page/16227889
page(s): 421 [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