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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] |
Truncatella Subcylindrica
''Truncatella subcylindrica'' is a species of small land snail that lives at the edge of the sea. It has gills and an operculum and is gastropod mollusk or micromollusk in the family Truncatellidae. MolluscaBase eds. (2022). MolluscaBase. Truncatella subcylindrica (Linnaeus, 1767). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=141850 on 2022-11-06 Description This species of snail has a shell which is light in color, and which can reach 5 mm in length. Like all other species in this genus, the shell loses its apical whorls as it grows, giving it a truncated and cylindrical appearance.White N. (1999). ''Truncatella subcylindrica. Looping snail.'' Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme n-line Plymouth: Marine Biological Association of the United Kingdom. ited 19 June 2003 Available from: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small dimensions. These tiny mollusks or their tiny shells are easy to overlook, as many of them are not very noticeable to the naked eye, and thus many people are not aware that they even exist. Nonetheless there are large numbers of families and vast numbers of mollusk species, in particular marine gastropods or sea snails, which are minute enough to be considered micromollusks. Considerable numbers of marine gastropod species are only about 5 or 6 mm in adult size; many others are only about 2 or 3 mm in adult size; and a few have adult shells which are as small as one millimeter or even smaller still. Despite their tiny size, many of the shells have a good deal of elaborate sculpture. A fair number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of The Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised in 2005 by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks. (Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwater, and from saltwater.) The paper setting out this taxonomy was published in the journal ''Malacologia''. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. The Bouchet & Rocroi system was the first complete gastropod taxonomy that primarily employed the concept of clades, and was derived from research on molecular phylogenetics; in this context a clade is a "natural grouping" of organisms based upon a statistical cluster analysis. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as order, superorder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in numerous gastropods, but it is also found in shelled cephalopods including ''Nautilus'', ''Spirula'' and the large extinct subclass of cephalopods known as the ammonites. A spiral shell can be visualized as consisting of a long conical tube, the growth of which is coiled into an overall helical or planispiral shape, for reasons of both strength and compactness. The number of whorls which exist in an adult shell of a particular species depends on mathematical factors in the geometric growth, as described in D'Arcy Wentworth Thompson's classic 1917 book ''On Growth and Form'', and by David Raup. The main factor is how rapidly the conical tube expands (or flares-out) over time. When the rate of expansion is low, such that each subsequent whorl is not that much wider than the previous one, then the adult shell has numerous whorls. When the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antoine Risso
Giuseppe Antonio Risso (8 April 1777 – 25 August 1845), called Antoine Risso, was a Niçard and naturalist. Risso was born in the city of Nice in the Duchy of Savoy, and studied under Giovanni Battista Balbis. He published ' (1810), ' (1826) and ' (1818–1822). Risso's dolphin was named after him. He is denoted by the author abbreviation Risso when citing a botanical name; the same abbreviation is used for zoological names. Genera and species named after him * ''Rissoa'' : a genus of gastropods * '' Rissoella'' : a genus of gastropod * '' Rissoella'' : a genus of red algae * ''Electrona risso'' : a lanternfish *''Polyacanthonotus rissoanus'' : smallmouth spiny eel Genera and species named by him He named 549 marine genera and species. IPNI The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is Latinized. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including such interested par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
