original description
Walker, B. (1901). New varieties of <i>Physa ancillaria</i> Say. <em>The Nautilus.</em> 14(9): 97-99 [January]., available online at https://www.biodiversitylibrary.org/page/1731608
page(s): 98-99 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project.
page(s): 98 [details]
From editor or global species database
Type locality Higgins Lake, Roscommon County, Michigan [details]