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Chloritis Togianensis
''Chloritis togianensis'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. The specific name ''togianensis'' is after the type locality Togian Island. Distribution The type locality is Togian Island, principle island of the Togian Archipelago, lying in the Tomini Bay, Central Sulawesi, Indonesia. Shell description The shell is solid, unicolored light ochre, biconcave, irregularly striated according to some growth lines, with numerous hair pits covering the whole surface. The spire is deeply sunken. The shell has 3-4 whorls. Whorls are rounded, first whorls very narrow, the last one very large, and partly embracing the preceding one, distinctly descending in front. The umbilicus is deep, and about 1/8 of the width of the shell. The aperture is crescent, a little oblique, peristome thick and expanded all around and is somewhat reflexed; both ends connected by a quite thin callus. The width of the shell is 17. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Chloritis Ungulina
''Chloritis'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.MolluscaBase (2018). Chloritis H. Beck, 1837. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818723 on 2018-12-25 The genus ''Chloritis'' is restricted to South-east Asia (from China to India and up to New Guinea) with numerous species having usually small distributional ranges. Shell description The conchological characters of the species belonging to the genus ''Chloritis'' are the more or less compact shells, the biconcave or a hardly elevated spire. The first whorls are quite narrow, rounded, the apical ones with regularly arranged granules or hair pits. Last whorl is widened suddenly, with a more or less open umbilicus. The aperture is lunate. The peristome is reflected, connected in most cases by a thin callus. Species Some researchers divided the genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloritis Unguiculastra
''Chloritis'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.MolluscaBase (2018). Chloritis H. Beck, 1837. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818723 on 2018-12-25 The genus ''Chloritis'' is restricted to South-east Asia (from China to India and up to New Guinea) with numerous species having usually small distributional ranges. Shell description The conchological characters of the species belonging to the genus ''Chloritis'' are the more or less compact shells, the biconcave or a hardly elevated spire. The first whorls are quite narrow, rounded, the apical ones with regularly arranged granules or hair pits. Last whorl is widened suddenly, with a more or less open umbilicus. The aperture is lunate. The peristome is reflected, connected in most cases by a thin callus. Species Some researchers divided the genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloritis Bifoveata
''Chloritis'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.MolluscaBase (2018). Chloritis H. Beck, 1837. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818723 on 2018-12-25 The genus ''Chloritis'' is restricted to South-east Asia (from China to India and up to New Guinea) with numerous species having usually small distributional ranges. Shell description The conchological characters of the species belonging to the genus ''Chloritis'' are the more or less compact shells, the biconcave or a hardly elevated spire. The first whorls are quite narrow, rounded, the apical ones with regularly arranged granules or hair pits. Last whorl is widened suddenly, with a more or less open umbilicus. The aperture is lunate. The peristome is reflected, connected in most cases by a thin callus. Species Some researchers divided the genus ''Chloriti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloritis Togianensis Shell
''Chloritis'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hadrinae of the family Camaenidae.MolluscaBase (2018). Chloritis H. Beck, 1837. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=818723 on 2018-12-25 The genus ''Chloritis'' is restricted to South-east Asia (from China to India and up to New Guinea) with numerous species having usually small distributional ranges. Shell description The conchological characters of the species belonging to the genus ''Chloritis'' are the more or less compact shells, the biconcave or a hardly elevated spire. The first whorls are quite narrow, rounded, the apical ones with regularly arranged granules or hair pits. Last whorl is widened suddenly, with a more or less open umbilicus. The aperture is lunate. The peristome is reflected, connected in most cases by a thin callus. Species Some researchers divided the genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term ''aperture'' is used for the main opening in gastropod shells, scaphopod shells, and also for ''Nautilus'' and ammonite shells. The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a ''gape''. Scaphopod shells are tubular, and thus they have two openings: a main anterior aperture and a smaller posterior aperture. As well as the aperture, some gastropod shells have additional openings in their shells for respiration; this is the case in some Fissurellidae (keyhole limpets) where the central smaller opening at the apex of the shell is called an orifice, and in the Haliotidae (abalones) where the row of respiratory openings in the shell are also called orifices. In gastropods In some prosobranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbilicus (mollusc)
The umbilicus of a shell is the axially aligned, hollow cone-shaped space within the whorls of a coiled mollusc shell. The term umbilicus is often used in descriptions of gastropod shells, i.e. it is a feature present on the ventral (or under) side of many (but not all) snail shells, including some species of sea snails, land snails, and freshwater snails. The word is also applied to the depressed central area on the planispiral coiled shells of ''Nautilus'' species and fossil ammonites. (These are not gastropods, but shelled cephalopods.) In gastropods The spirally coiled whorls of gastropod shells frequently connect to each other by their inner sides, during the natural course of its formation. This results in a more or less solid central axial pillar, known as the columella. The more intimate the contact between the concave side of the whorls is, the more solid the columella becomes. On the other hand, if this connection is less intense, a hollow space inside the whorls may re ... [...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] |
Spire (mollusc)
A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods. In textbook illustrations of gastropod shells, the tradition (with a few exceptions) is to show most shells with the spire uppermost on the page. The spire, when it is not damaged or eroded, includes the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulawesi
Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Archipelago. Within Indonesia, only Sumatra, Borneo, and New Guinea, Papua are larger in territory, and only Java and Sumatra have larger populations. The landmass of Sulawesi includes four peninsulas: the northern Minahassa Peninsula, Minahasa Peninsula, the East Peninsula, Sulawesi, East Peninsula, the South Peninsula, Sulawesi, South Peninsula, and the Southeast Peninsula, Sulawesi, Southeast Peninsula. Three gulfs separate these peninsulas: the Gulf of Tomini between the northern Minahasa and East peninsulas, the Tolo Gulf between the East and Southeast peninsulas, and the Bone Gulf between the South and Southeast peninsulas. The Strait of Makassar runs along the western side of the island and separates the island from Borneo. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water. Land snails are a polyphyletic group comprising at least ten independent evolutionary transitions to terrestrial life (the last common ancestor of all gastropods was marine). The majority of land snails are pulmonates that have a lung and breathe air. Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum. The largest clade of land snails is the Cyclophoroidea, with more than 7,000 species. Many of these operculate land snails live in habitats or microhabitats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
