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Family of gastropods From Wikipedia, the free encyclopedia
Truncatellidae, common name the "looping snails", is a family of small amphibious snails, with gills and an operculum, semi-marine gastropod mollusks or micromollusks.
| Truncatellidae | |
|---|---|
| |
| Two live individuals of Truncatella subcylindrica: a juvenile on the left, and an adult on the right | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Truncatelloidea |
| Family: | Truncatellidae Gray, 1840[1] |
This family of snails have small shells which lose their apical whorls as they continue to grow, giving the shells a truncated and cylindrical appearance.
The family Truncatellidae consists of two subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):[2]
Genera within the family Truncatellidae include:
Truncatellinae
Geomelaniinae
subfamily ?
Snails in this family are found in marine coastal environments, near or just above the high tide line on stones and pebbles, fine sediments and decomposing vegetation.
The sexes are separate. Fertilized eggs are laid as egg capsules, which are attached to detritus.
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