Anisus vortex
Species of gastropod
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.
01Description
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.
02Distribution
The range of this species is from Europe across the Palearctic to Siberia. It occurs in countries and islands including:
- Belgium
- Czech Republic - least concern (LC)
- Germany
- Great Britain
- Ireland
- The Netherlands
- Poland
- Slovakia
Sources and credits
This article is adapted from the Wikipedia article “Anisus vortex”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Anisus vortex.jpg by Francisco Welter Schultes, Public domain
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