Valvata cristata
From Wikipedia, the free encyclopedia
| Valvata cristata | |
|---|---|
 | |
| Two views of a shell of Valvata cristata | |
| Conservation status | |
| NE[1] | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia informal group Lower Heterobranchia |
| Superfamily: | Valvatoidea |
| Family: | Valvatidae |
| Genus: | Valvata |
| Subgenus: | Valvata |
| Species: | V. cristata |
| Binomial name | |
| Valvata cristata O. F. Müller, 1774[2] | |
Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.
Shell description
The shell of this exceeding small (2-4 mm) Valvata species is very flat in its coiling, and therefore it somewhat resembles a Planorbis shell. However, the shell is dextral in coiling and has an operculum.[3]
Habitat
This species lives in stagnant and slow-moving water.
Distribution
- Czech Republic
- Slovakia
- Poland
- Germany - (Arten der Vorwarnliste)[4]
- Netherlands
- the British Isles: Great Britain and Ireland
- Hungary
- and other areas
References
- ↑ 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 10 November 2007.
- ↑ Müller, O. F. 1774. Vermivm terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. pp. I-XXVI [= 1-36], 1-214, [1-10]. Havniae & Lipsiae. (Heineck & Faber).
- ↑ Janus, Horst, 1965. ‘’The young specialist looks at land and freshwater molluscs’’, Burke, London
- ↑ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 106, ISBN 3-923376-02-2
External links
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