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Truncatellidae
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 A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ... 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 incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truncatella (gastropod)
''Truncatella'' is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Truncatellidae. These small and minute snails live on land, very close to seawater. They walk with a strange looping action, and the adults have truncated shells. Many of the species are small enough to be considered micromollusks. ''Truncatella'' is the type genus of the family Truncatellidae. Description As implied by the name, these snails are notable for the way they modify their elongated shells as they mature, breaking off several of the apical whorls, and forming a relatively smooth seal for the remainder of the shell. Locomotion The method of locomotion used by ''Truncatella'' is unusual. Instead of gliding over a slime trail using minute waves in its foot, ''Truncatella'' uses a very large and muscular proboscis to reach ahead and grasp a surface, at which point the small foot releases its hold and the proboscis contracts to pull the animal forwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nystia
''Nystia'' is an extinct genus of fossil freshwater snails, aquatic gastropod molluscs in the family Truncatellidae.Kadolsky D. (1988). "Mollusken aus dem Oligozän von Sieblos a.d. Wasserkuppe/Rhön". '' Beitrage zur Naturkunde in Osthessen'', Fulda, 24: 99-129. pages 103-105. The genus ''Nystia'' was previously classified within the Stenothyridae Stenothyridae is a family of small freshwater snails, snails with gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea. This family has no subfamilies. Distribution There are known about 60 freshwater speci ... or the Micromelaniidae. It is currently classified within the Truncatellidae according to Kadolsky (1988). Distribution The distribution of the genus ''Nystia'' includes France and the Czech Republic. Species Species in the genus ''Nystia'' include: * '' Nystia duchasteli'' (Nyst, 1836) - synonym: ''Paludina duchasteli'' Nyst, 1836, type species, from Eocene of France * '' Nystia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taheitia
''Taheitia'' is a genus of very small land snails that have an Operculum (gastropod), operculum and live near saltwater, maritime terrestrial animal, terrestrial gastropod mollusks in the family Truncatellidae."Mollusca" . Diversidad Biológica Cubana, Retrieved 23 March 2011. Species Species within the genus ''Taheitia'' include: * ''Taheitia alata'' * ''Taheitia elongata'' (Poey in Pfeiffer, 1856) * ''Taheitia filicosta'' (Gundlach in Poey, 1858) * ''Taheitia lamellicosta'' * ''Taheitia lirata'' (Poey, 1858) * ''Taheitia mariannarum'' * ''Taheitia parvula'' * ''Taheitia wrighti'' (Pfeiffer, 1862)References Truncatellidae Taxonomy articles created by Polbot {{Truncatellidae ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
