original description
(of Helix turonensis Deshayes, 1832 †) Deshayes, G. P. (1830-1832). <i>Encyclopédie méthodique ou par ordre de matières. Histoire naturelle des Vers et Mollusques</i>. Vol. 2: viii+1-594 [part 1: i-vi, 1-256, Livraison 101, 1 Feb 1830; part 2: 1-144, Livraison 101, 1 Feb. 1830; 145-594, Livraison 102, 29 Sept. 1832]. Vol. 3: 595-1152 [Livraison 102, 29 Sept. 1832]. , available online at https://doi.org/10.5962/bhl.title.8638
page(s): 251 [details]
basis of record
Höltke, O.; Rasser, M.W. (2016). The <em>Palaeotachea</em> complex (Gastropoda: Pulmonata) in the Miocene of SW Germany: a morphometric approach. <em>Journal of Conchology.</em> 42 (4), 239-256.
page(s): 251, figs 5.17-18, 6.6 [details] Available for editors [request]
additional source
Nordsieck, H. (2014). Annotated check-list of the genera of fossil land snails (Gastropoda: Stylommatophora) of western and central Europe (Cretaceous – Pliocene), with description of new taxa. <em>Archiv für Molluskenkunde.</em> 143(2): 153-185., available online at https://doi.org/10.1127/arch.moll/1869-0963/143/153-185
page(s): 174 [details]
new combination reference
Harzhauser, M., Neubauer, T.A., Gross, M., Binder, H. (2014). The early Middle Miocene mollusc fauna of Lake Rein (Eastern Alps, Austria). <em>Palaeontographica Abt. A.</em> 302(1-6): 1-71.
page(s): 36-37, pl. 11, figs 1-4 [details] Available for editors [request]
From editor or global species database
Taxonomic remark Helix turonensis is the type species of Megalotachea Pfeffer, 1930. After Nordsieck (2014), the genera Megalotachea and Palaeotachea can be generally delimited based on the presence of radial rib-striae granulated by spiral striae in Palaeotachea species and differences in the shape of the columellar plate. The delimitation proves to be difficult, however, which is why a solution to the problem is pending (Nordsieck 2014). Therefore, the combination of H. turonensis with Megalotachea is maintained for the moment. [details]