MolluscaBase name details
original description
Sowerby I, G. B. (1821-1834). <i>The genera of recent and fossil shells, for the use of students, in conchology and geology</i>. Published in 42 parts. Vol. 1, pls 1-126 [1821-1825]; vol. 2, pls 127-262 + text (unpaginated) [1825-1834]. London: G. B. Sowerby. , available online at https://www.biodiversitylibrary.org/page/45486673
page(s): Planorbis, fig. 4 [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
Nylander, O. O. (1908). Additional shells found in Aroostook County, Maine. <em>The Nautilus.</em> 22(2): 19., available online at https://www.biodiversitylibrary.org/page/1743528 [details]