original description
Leonard, A. B. (1972). New gastropods from the Pleistocene of Illinois. <em>The Nautilus.</em> 85(3): 78-84, figs. 1-9., available online at https://www.biodiversitylibrary.org/page/8516182
page(s): 81-82, figs 2, 3 [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
Type locality Briar Bluff South Section in Petersburg Silts of early Illinoian age, in the SW corner of NW1/4 sec. 21, T 17 N, R 1 E, Henry County, Illinois (USA) [details]