MolluscaBase name details
original description
(of Ancylus fuscus C. B. Adams, 1840) Adams, C. B. (1840). Descriptions of thirteen new species of shells of New England. <em>Journal of the Boston Society of Natural History.</em> 3: 318-332, pl. 3., available online at https://biodiversitylibrary.org/page/32416055
page(s): 329, pl. 3, fig. 17 [details]
basis of record
Walker, B. (1903). Notes on eastern American Ancyli. <em>The Nautilus.</em> 17(2): 13-19, pls. 1-2., available online at https://www.biodiversitylibrary.org/page/1726432
page(s): 15-17, pl. 1, figs. 1-9 [details]