Cepaea sylvestrina Schlotheim 1820
Creators
Description
Cepaea cf. sylvestrina Schlotheim, 1820
(Figs. 17–18)
Helix sylvestrina Schlotheim, 1820: 99.
Cepaea sylvestrina sylvestrina: Wenz, 1923: 690. Cepaea sylvestrina: Truc, 1971: 282.
Cepaea silvana silvana: Gall, 1980: 61.
Cepaea cf. sylvestrina: Salvador, 2013b: 163 (figs. 14–17).
Material examined. BSPG 1952 XVIII 49 (10 spcm.).
Description. Shell large, 4¼–4½ whorls, helicoid; whorls regularly growing. Protoconch flattened, smooth; transition to teleoconch unclear. Teleoconch smooth, except for growth lines. Whorl profile flat on first whorls. Suture well-marked. Body whorl slightly bent downwards. Aperture prosocline, crescent-shaped; callus faint. Peristome markedly thickened and reflexed. Umbilicus imperforate.
Previous identification of the material. Gall (1980: Nr. 16): Cepaea silvana silvana (Klein).
Discussion. The specimens from Gündlkofen compare reasonably well with C. sylvestrina, but are slightly larger, with one quarter to one half additional whorl when compared to typical C. sylvestrina; nevertheless, this species seem to be quite variable morphologically. Cepaea silvana Klein, another common species in the German Middle Miocene, is even smaller, with fewer whorls and a more rounded overall profile, and might be simply a morphological extreme of C. sylvestrina.
Paleoecological remarks. As C. cf. eversa above.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Helicidae
- Genus
- Cepaea
- Kingdom
- Animalia
- Order
- Stylommatophora
- Phylum
- Mollusca
- Scientific name authorship
- Schlotheim
- Species
- sylvestrina
- Taxon rank
- species
- Taxonomic concept label
- Cepaea sylvestrina Schlotheim, 1820 sec. Salvador, 2014
References
- Schlotheim, E. F. (1820) Die Petrefactenkunde auf ihrem jetzigen Standpunkte durch die Beschreibung seiner Sammlung versteinerter und fossiler Uberreste des Thier- und Pflanzenreichs der Vorwelt. Becker'sche Buchhandlung, Gotha, 432 pp.
- Wenz, W. (1923) Gastropoda extramarina tertiaria I, II, III, VI. In: Diener, C. (Ed.), Fossilium Catalogus I: Animalia. W. Junk, Berlin, pp. 1 - 352, 353 - 736, 737 - 1068, 1735 - 1862.
- Truc, G. (1971) Heliceae (Gastropoda) du Neogene du Bassin Rhodanien (France). Geobios, 4 (4), 273 - 327. http: // dx. doi. org / 10.1016 / s 0016 - 6995 (71) 80012 - 8
- Gall, H. (1980) Eine Gastropodenfauna aus dem Landshuter Schotter der Oberen Sußwassermolasse (Westliche Paratethys, Badenien) von Gundlkofen / Niederbayern. Mitteilungen der Bayerischen Staatssammlung fur Palaontologie und historische Geologie, 20, 51 - 77.
- Salvador, R. B. (2013 b) The fossil pulmonate snails of Sandelzhausen (Early / Middle Miocene, Germany): Succineidae, Testacelloidea and Helicoidea. Zootaxa, 3721 (2), 157 - 171. http: // dx. doi. org / 10.11646 / zootaxa. 3721.2.3