Anisus vortex

Anisus vortex is a species of small freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.[3]

Anisus vortex
Shells of Anisus vortex
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Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily:
Planorboidea
Family:
Planorbidae
Subfamily:
Planorbinae
Tribe:
Planorbini
Genus:
Anisus
Subgenus:
Disculifer
Species:
A. vortex
Binomial name
Anisus vortex
(Linnaeus, 1758)[2]
Synonyms

Helix vortex Linnaeus, 1758

Description

The shell is only 0.8 to 1.1 mm high and measures up to 9 mm in diameter. It has up to 7 whorls. The shell is flattened at the functional lower side, concave at the upper side. On the top, the whorls are flat, separated only by a slightly pronounced seam. On the bottom, however, the whorls are more curved and separated by a distinct suture. Shell with very sharp keel.

Distribution

The range of this species is from Europe across the Palearctic to Siberia. It occurs in countries and islands including:

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References
  1. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 27 June 2007.
  2. Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10th edition. - Vermes. Testacea: 700-781. Holmiae. (Salvius).
  3. Bouchet, P. (2014). Anisus vortex (Linnaeus, 1758). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=716345 on 2014-11-24
  4. (in Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
  5. Juřičková L., Horsák M. & Beran L. (2001). "Check-list of the molluscs (Mollusca) of the Czech Republic". Acta Soc. Zool. Bohem. 65: 25-40.
  6. (in German) Glöer P. & Meier-Brook C. (2003). Süsswassermollusken. DJN, pp. 134, ISBN 3-923376-02-2
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