Superfamily Planorboidea Subfamily Planorbinae Rank Species | Tribe Planorbini | |
Similar Anisus, Planorbis planorbis, Segmentina nitida, Bathyomphalus contortus, Anisus spirorbis | ||
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.
Contents
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 to Siberia. It occurs in countries and islands including:
References
Anisus vortex Wikipedia(Text) CC BY-SA