original description
(of Pyrgula scalariformis Wolf, 1870) Wolf J. (1870). Descriptions of three new species of shells. <em>American Journal of Conchology.</em> 5: 198., available online at https://www.biodiversitylibrary.org/page/7005287
page(s): 198, pl. 17, fig. 3 [details]
original description
(of Pyrgulopsis mississippiensis Call & Pilsbry, 1886) Call, R. E. & Pilsbry, H. A. (1886). On <i>Pyrgulopsis</i>, a new genus of rissoid mollusk, with descriptions of two new forms. <em>Proceedings of the Davenport Academy of Natural Sciences.</em> 5: 9-14, pl. 2., available online at https://www.biodiversitylibrary.org/page/14051068
page(s): 13, pl. 2 figs 14-16 [details]
original description
(of Pyrgulopsis wabashensis Hinkley, 1908) Hinkley, A. A. (1908). A new species of <i>Pyrgulopsis</i>. <em>The Nautilus.</em> 21(10): 117-118., available online at https://www.biodiversitylibrary.org/page/3666075 [details]
original description
(of Pyrgula scalariformis var. mississippiensis Pilsbry, 1886) Pilsbry, H. A. (1886). Notes on some eastern Iowa snails. <em>American Naturalist.</em> 20: 75., available online at https://www.biodiversitylibrary.org/page/41913114
page(s): 75 [details]
basis of record
Thompson, F. G. & Hershler, R. (2002). Two Genera of North American Freshwater Snails: <i>Marstonia</i> Baker, 1926, Resurrected to Generic Status, and <i>Floridobia</i>, New Genus (Prosobranchia: Hydrobiidae: Nymphophilinae). <em>The Veliger.</em> 45 (3): 269-271. Berkeley., available online at https://www.biodiversitylibrary.org/page/42496422 [details]
From editor or global species database