MolluscaBase taxon details
original description
(of Entodina Ancey, 1887) Ancey, C. F. (1887). Description of new genera or subgenera of Helicidæ. <em>The Conchologists' Exchange.</em> 1(9-10): 53-54 [30 April]; 1(11): 64 [May]; 1(12): 75-76 [28 June]; 2(2):22-23 [August]; 2(3): 38-39 [September]., available online at https://www.biodiversitylibrary.org/page/28528881
page(s): 64 [details]
original description
(of Helix (Systrophia) L. Pfeiffer, 1855) Pfeiffer, L. (1855-1856). Versuch einer Anordnung der Heliceen nach natürlichen Gruppen. <em>Malakozoologische Blätter.</em> 2(3): 112 [≥ September 1855]; 2(4): 113–144 [December 1855]; 2(5) (“1855”): 145–185 [January 1856]., available online at https://www.biodiversitylibrary.org/page/15864853
page(s): 136 [details]
subsequent type designation
Baker, H. B. (1925). The Mollusca collected by the University of Michigan-Williamson Expedition in Venezuela, Part III: Pupillidae to Oleacinidae. <em>Occasional Papers of the Museum of Zoology, University of Michigan.</em> 156: 1-56, pls. 6-11., available online at https://deepblue.lib.umich.edu/bitstream/handle/2027.42/56595/OP156.pdf?sequence=1&isAllowed=y
page(s): 14; note: Baker accepted Helix systropha as the type species by tautonymy. This is not the case, but under Art. 69.1.1 this is deemed to be a valid type species designation. [details]