MolluscaBase taxon details
original description
(of Helix clausus 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): 154 [details]
original description
(of Helix ingallsiana P. Fischer, 1877) Fischer, P. (1877). Beiträge zur näheren kenntniss der mollusken. Monographische versuche: <i>Paryphanta, Retinella, Mesomphix, Macrocyclis, Patera, Columna, Streptostyla, Rhynchocheila</i> und <i>Trochatella</i>. <em>Notitiae Malacologicae.</em> 2: 1-16, plates 1-15., available online at https://www.biodiversitylibrary.org/page/11061347
page(s): 10, pl. 3, fig. 5 [details]
original description
(of Helix clausa var. subalbolabris P. Fischer, 1877) Fischer, P. (1877). Beiträge zur näheren kenntniss der mollusken. Monographische versuche: <i>Paryphanta, Retinella, Mesomphix, Macrocyclis, Patera, Columna, Streptostyla, Rhynchocheila</i> und <i>Trochatella</i>. <em>Notitiae Malacologicae.</em> 2: 1-16, plates 1-15., available online at https://www.biodiversitylibrary.org/page/11061347
page(s): 10, pl. 3, fig. 2 [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
Lee, H. G. (2010). Gettleman key to probe of major reversals. <em>American Conchologist.</em> 38(4): 6-11., available online at https://conchologistsofamerica.org/wp-content/uploads/2019/01/38-dec-2010.pdf
page(s): 8-9, fig. 6 [details]
additional source
Webb, G. R. (1964). Stream disperal of <i>Mesodon</i>. <em>The Nautilus.</em> 78(1): 30., available online at https://www.biodiversitylibrary.org/page/8521325 [details]
additional source
Rawls, H. C. & Baum, J. M. (1971). Fluorescence in <i>Mesodon clausus</i> (Say). <em>The Nautilus.</em> 85(2): 65-67., available online at https://www.biodiversitylibrary.org/page/8516165 [details]