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): 80-81, fig. 7 [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 Wildcat Creek Section, Petersburg Silt Formation of Illinoian age, in die NE1/4 NE1/4 NE1/4 sec. 19, T 13 N, R 4 W, Mercer County, Illinois (USA) [details]