MolluscaBase taxon details
original description
(of Zonites placentula Shuttleworth, 1852) Shuttleworth, R. J. (1852). Diagnosen neuer Mollusken. <em>Mittheilungen der Naturforschenden Gesellschaft in Bern.</em> 1852 (248-249): 193-208., available online at https://www.biodiversitylibrary.org/page/11568289
page(s): 194 [details]
original description
(of Helix (Hyalina) monroensis J. Lewis, 1871) Lewis, J. (1871). Notes on the land shells of east Tennessee. American Journal of Conchology, 6(3): 188-191, plate 12.
page(s): 188, pl. 12, figs. 1-2 [details]
original description
(of Paravitrea (Paravitrea) placentula lithodora Pilsbry, 1946) Pilsbry, H. A. (1946). Land Mollusca of North America (north of Mexico). Volume II Part 1. <em>The Academy of Natural Sciences of Philadelphia Monographs.</em> 3: i-viii, 1-520, 1 plate. Philadelphia [6 December].
page(s): 371, fig. 192 [details] Available for editors [request]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]