Vertigo parcedentata (*)
Vertigo parcedentata is a species of small land snail from the family Vertiginidae.
Recent distribution include Norway.
Fossil distribution include also other parts of Europe from the Netherlands to Ukraine[unreliable source?]: Pleistocene and alluvium of the Rhine valley in Germany, Czech Republic, Slovakia, etc.
The shell is small, narrowly ovate. The shell has a narrow umbilical crevice and blunt summit. The shell has from 4½ to 5 convex whorls separated by a deeply impressed suture. The last whorl is forming half of the total length. First whorl is entirely smooth, the rest having rather oblique striae, of which there are several finer between two stronger striae.
The aperture is semiovate, obliquely truncate above, with weakly reflected margins which are connected by a very thin callus. The right margin is weakly arched forward. It has usually one or two teeth or is wholly toothless, but it can have up to 4 teeth.
Dimensions of the shell are varry acoording to the authors:
* The width of the adult shell is 1 mm, the height is 1.8-2.2 mm (Pilsbry 1918-1920).
This article incorporates public domain text from reference .
1. ^ (German) Braun A. 1847. Löss bei Krakau und an der Donau; Binnen-Konchylien darin. Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde 1847: 49-54. Stuttgart.
Source: Wikispecies, Wikipedia: All text is available under the terms of the GNU Free Documentation License