MolluscaBase name details
original description
Say, T. (1831). New terrestrial and fluviatile shells of North America. (cont.). The Disseminator, (2) 1(29): no pagination .
page(s): no page number [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]
additional source
Walker, B. (1904). Notes on eastern American Ancyli. II. <em>The Nautilus.</em> 18(2): 16-17, pl. 1; 18(3): 25-30, pl. 2., available online at https://www.biodiversitylibrary.org/page/1816983
page(s): 27-29, pl. 1, figs. 11-12, 16-23, pl. 2, figs. 1-22 [details]
additional source
Marsh, W. A. (1889). Brief notes on the land and fresh-water shells of Mercer County, Ill. <em>The Nautilus.</em> 3(2): 23-24; 3(3): 34-35., available online at https://www.biodiversitylibrary.org/page/12596393 [details]