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
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 The family Truncatellidae consists of two subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005): subfamily Truncatellinae Gray, 1840 subfamily Geomelaniinae Kobelt & Möllendorff, 1897Kobelt & Möllendorff (1897). Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 29(5-6): 74.
Genera Genera within the family Truncatellidae include:
Truncatellinae Truncatella Risso, 1826"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. - type genus of the family Truncatellidae
Geomelaniinae Geomelania L. Pfeiffer, 1845 - type genus of the subfamily Geomelaniinae
subfamily ? †Nystia Taheitia Adams, 1863
Habitat 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 The sexes are separate. Fertilized eggs are laid as egg capsules, which are attached to detritus.
References
External links
Truncatellidae on Discovery Life