MolluscaBase taxon details
original description
(of Isthmia ventricosa E. S. Morse, 1865) Morse, E. S. (1865). Descriptions of new species of Pupadae. <em>Annals of the Lyceum of Natural History of New York.</em> 8: 207-212., available online at https://www.biodiversitylibrary.org/page/16022455 page(s): 207, fig. 1 [details]
original description
(of Vertigo ventricosa var. elatior Sterki, 1894) Sterki, V. (1894). The land and fresh water Mollusca in the vicinity of New Philadelphia. A contribution to the natural history of Tuscarawas Co., Ohio. Beobachter Print, New Philadelphia, Ohio. 1-14. page(s): 5 [details]
original description
(of Vertigo gouldii var. lagganensis Pilsbry, 1899) Pilsbry, H. A. (1899). Notes on a new northwest American land snails. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 51(2): 314-315., available online at https://www.biodiversitylibrary.org/page/6389499 page(s): 314, fig. 1 [details]
original description
(of Vertigo gouldii var. loessensis F. C. Baker, 1928) Baker, F. C. (1928). Description of new varieties of land and freshwater mollusks from Pleistocene deposits in Illinois. <em>The Nautilus.</em> 41(4): 132-137., available online at https://www.biodiversitylibrary.org/page/8519867 page(s): 135 [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]
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