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Amphibulima Browni
''Amphibulima browni'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Amphibulimidae. This rare tropical land snail is endemic to the West Indian island of Dominica. The snail has been seen only very rarely since it was first discovered in the late 19th century, and it may eventually be listed as an endangered species. The shell of this snail is oblong and thin, but not fragile, and it has a large aperture. Distribution ''Amphibulima browni'' is endemic to the West Indian island of Dominica. The type locality is Dominica, the altitude 330 m, "on bananas". The status of this species, which is one of three species of ''Amphibulima'' on Dominica, has been somewhat doubtful for a long period, since this taxon has not been reported since its original description. The collection of a few live specimens during the recent surveys in the 2000s confirmed its presence, and although it appears rare, it seems to be less restricted in distr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Augustus Pilsbry
Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a century. For much of his career, his authority with respect to the classification of certain substantial groups of organisms was unchallenged: barnacles, chitons, North American terrestrial molluscs, terrestrial mollusks, and others. Biography Pilsbry (frequently misspelled ''Pilsbury'') spent his childhood and youth in Iowa. He was called "Harry" Pilsbry then, and developed an early fascination with the limited variety of mollusks he was able to find. He attended the University of Iowa, and received the Bachelor of Science degree there in 1882, but did not immediately find employment in his field of interest. Instead, Henry Pilsbry worked for publishing firms and newspapers for the next several years, but devoted most of his spare time to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Dominica
The non-marine molluscs of Dominica are species of land and freshwater molluscs, i.e. land snails, land slugs and one small freshwater clam that are part of the wildlife of Dominica, an island in the Lesser Antilles. In malacology, the non-marine molluscs of an area are traditionally listed separately from the marine molluscs (those molluscs that live in full-salinity saltwater). Dominica is a Caribbean island, part of the Windward Island chain of the Lesser Antilles. Fifty-five species of non-marine molluscs have been found in the wild in Dominica, including sixteen endemic species of land snails, species which occur nowhere else on Earth. Dominica is a mountainous, , volcanic, tropical island. It is undeveloped compared with most other Caribbean islands, and it is known for its wildlife and unspoiled natural landscapes. The rugged terrain includes a great deal of tropical rainforest, numerous rivers, and several officially protected areas, including Morne Trois Pitons National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibulima Browni Shell 3
''Amphibulima'' is a genus of air-breathing land snails, a terrestrial pulmonate gastropod mollusks in the family Amphibulimidae.Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". '' Basteria'' 74(1-3): 25-31. MolluscaBase eds. (2022). MolluscaBase. Amphibulima Lamarck, 1805. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=870090 on 2022-07-10 ''Amphibulima'' is the type genus of the subfamily Amphibuliminae. Species Species in the genus ''Amphibulima'' include: * '' Amphibulima browni'' Pilsbry, 1899 - endemic to DominicaRobinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''Zoologische Mededelingen'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13 * '' Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibulima Browni Shell 2
''Amphibulima'' is a genus of air-breathing land snails, a terrestrial pulmonate gastropod mollusks in the family Amphibulimidae.Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". '' Basteria'' 74(1-3): 25-31. MolluscaBase eds. (2022). MolluscaBase. Amphibulima Lamarck, 1805. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=870090 on 2022-07-10 ''Amphibulima'' is the type genus of the subfamily Amphibuliminae. Species Species in the genus ''Amphibulima'' include: * '' Amphibulima browni'' Pilsbry, 1899 - endemic to DominicaRobinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''Zoologische Mededelingen'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13 * '' Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibulima Browni Shell
''Amphibulima'' is a genus of air-breathing land snails, a terrestrial pulmonate gastropod mollusks in the family Amphibulimidae.Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". '' Basteria'' 74(1-3): 25-31. MolluscaBase eds. (2022). MolluscaBase. Amphibulima Lamarck, 1805. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=870090 on 2022-07-10 ''Amphibulima'' is the type genus of the subfamily Amphibuliminae. Species Species in the genus ''Amphibulima'' include: * '' Amphibulima browni'' Pilsbry, 1899 - endemic to DominicaRobinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''Zoologische Mededelingen'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13 * '' Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columella (gastropod)
The columella (meaning "little column") or (in older texts) pillar is a central anatomical feature of a coiled snail shell, a gastropod shell. The columella is often only clearly visible as a structure when the shell is broken, sliced in half vertically, or viewed as an X-ray image. The columella runs from the apex of the shell to the midpoint of the undersurface of the shell, or the tip of the siphonal canal in those shells which have a siphonal canal. If a snail shell is visualized as a cone of shelly material which is wrapped around a central axis, then the columella more or less coincides spatially with the central axis of the shell. In the case of shells that have an umbilicus, the columella is a hollow structure. The columella of some groups of gastropod shells can have a number of plications or folds (the columellar fold, plaits or plicae), which are usually visible when looking to the inner lip into the aperture of the shell. These folds can be wide or narrow, prominent ... [...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] |
Suture (gastropod)
In anatomy, a suture is a fairly rigid joint between two or more hard elements of an organism, with or without significant overlap of the elements. Sutures are found in the skeletons or exoskeletons of a wide range of animals, in both invertebrates and vertebrates. Sutures are found in animals with hard parts from the Cambrian period to the present day. Sutures were and are formed by several different methods, and they exist between hard parts that are made from several different materials. Vertebrate skeletons The skeletons of vertebrate animals (fish, amphibians, reptiles, birds, and mammals) are made of bone, in which the main rigid ingredient is calcium phosphate. Cranial sutures The skulls of most vertebrates consist of sets of bony plates held together by cranial sutures. These sutures are held together mainly by Sharpey's fibers which grow from each bone into the adjoining one. Sutures in the ankles of land vertebrates In the type of crurotarsal ankle which is found i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex (mollusc)
In anatomy, an apex (adjectival form: apical) is part of the shell of a mollusk. The apex is the pointed tip (the oldest part) of the shell of a gastropod, scaphopod, or cephalopod. The apex is used in end-blown conches. Gastropods The word "apex" is most often used to mean the tip of the spire of the shell of a gastropod. The apex is the first-formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the embryonic shell or protoconch is situated, if that is still present in the adult shell (often it is lost or eroded away). Coiled gastropod shells The phrase apical whorls, or protoconch, means the whorls that constitute the embryonic shell at the apex of the shell, especially when this is clearly distinguishable from the later whorls of the shell, otherwise known as the teleoconch. Comparison of the apical part and the whole shell of ''Otukaia kiheiziebisu'': File:Calliostoma kiheiziebisu apex.png File:Calliostoma k ... [...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] |
Amphibulima Browni Shell 4
''Amphibulima'' is a genus of air-breathing land snails, a terrestrial pulmonate gastropod mollusks in the family Amphibulimidae.Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". '' Basteria'' 74(1-3): 25-31. MolluscaBase eds. (2022). MolluscaBase. Amphibulima Lamarck, 1805. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=870090 on 2022-07-10 ''Amphibulima'' is the type genus of the subfamily Amphibuliminae. Species Species in the genus ''Amphibulima'' include: * '' Amphibulima browni'' Pilsbry, 1899 - endemic to DominicaRobinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''Zoologische Mededelingen'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13 * '' Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
