MolluscaBase name details
Palaeotachea turonensis (Deshayes, 1832) †
934220 (urn:lsid:marinespecies.org:taxname:934220)
unaccepted > superseded combination
Species
Cepaea eversa (Deshayes, 1851) † · unaccepted > junior subjective synonym
Cepaea eversa baumbergeri Jooss, 1924 † · unaccepted > junior subjective synonym
Cepaea eversa larteti (de Boissy, 1840) † · unaccepted > junior subjective synonym
Helix eversa Deshayes, 1851 † · unaccepted > junior subjective synonym
Megalotachea eversa (Deshayes, 1851) † · unaccepted > junior subjective synonym
Megalotachea eversa baumbergeri (Jooss, 1924) † · unaccepted > junior subjective synonym
fossil only
(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]
page(s): 251 [details]
Taxonomic remark Helix turonensis is the type species of Megalotachea Pfeffer, 1930. After Nordsieck (2014), the genera Megalotachea and...
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]
MolluscaBase eds. (2025). MolluscaBase. Palaeotachea turonensis (Deshayes, 1832) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=934220 on 2025-09-11
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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] Available for editors [request]
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]
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] Available for editors
[request]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]
Present Inaccurate Introduced: alien Containing type locality
Syntype (of Cepaea eversa baumbergeri Jooss, 1924) SMNS 106366 [details]
Syntype (of Cepaea eversa baumbergeri Jooss, 1924) SMNS 106367 [details]
Syntype (of Cepaea eversa baumbergeri Jooss, 1924) SMNS 106368 [details]
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]
