original description
(of Lymneus appressus Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337
page(s): 168 [details]
basis of record
Baker, F. C. (1911). The Lymnaeidae of North and Middle America, recent and fossil. <em>The Chicago Academy of Sciences, special publication.</em> 3: 1-539., available online at https://www.biodiversitylibrary.org/page/18164581
page(s): 137, pl. XIX, figs. 4-10 [details]
additional source
Carriker, M. R. (1943). Variability, developmental changes, and denticle-replacement in the radula of <i>Lymnaea stagnalis appressa</i> Say. <em>The Nautilus.</em> 57(2): 52-59, tables 1-2., available online at https://www.biodiversitylibrary.org/page/8515510 [details]
additional source
Clarke, A. H. (1973). The freshwater molluscs of the Canadian Interior Basin. <em>Malacologia.</em> 13(1-2): 1-509., available online at http://biodiversitylibrary.org/page/13110006
page(s): 296, pl. 12, fig. 1 [details]
From editor or global species database
Type locality North America, Lake Superior [details]
From editor or global species database