Truncatellidae
| 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] |
Truncatellidae, common name the "looping snails", is a family of small amphibious snails, with gills and an operculum, semi-marine gastropod mollusks or micromollusks.
Shell description
[edit]
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.
Subfamilies
[edit]The family Truncatellidae consists of two subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):[2]
- subfamily Truncatellinae Gray, 1840
- subfamily Geomelaniinae Kobelt & Möllendorff, 1897[3]
Genera
[edit]Genera within the family Truncatellidae include:
Truncatellinae
- Truncatella Risso, 1826[4] - type genus of the family Truncatellidae[2]
Geomelaniinae
- Geomelania L. Pfeiffer, 1845 - type genus of the subfamily Geomelaniinae[2]
subfamily ?
Habitat
[edit]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.
Life cycle
[edit]The sexes are separate. Fertilized eggs are laid as egg capsules, which are attached to detritus.
References
[edit]- ^ Gray (1840). Synopsis of the contents of the British Museum ed. 42: 117, 148.
- ^ a b c Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
- ^ Kobelt & Möllendorff (1897). Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 29(5-6): 74.
- ^ a b "Mollusca" Archived 2012-06-26 at the Wayback Machine. Diversidad Biológica Cubana, accessed 23 March 2011.
External links
[edit]
- Truncatellidae on Discovery Life