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Rhodacmea
''Rhodacmea'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . ''Rhodacmea'' is the type genus of the subfamily Rhodacmeinae. Anatomy These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill, which is necessary as, in their non-tidal habitat, these limpets never reach the surface for air. Species Species in the genus ''Rhodacmea'' include: * '' Rhodacmea elatior'' (Anthony, 1855) – Domed ancylid * '' Rhodacmea filosa'' (Conrad, 1834) – Wicker ancylid The wicker ancylid (''Rhodacmea filosa'') is a species of small, air-breathing, freshwater snail or limpet, a pulmonate gastropod in the family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodacmea Filosa
The wicker ancylid (''Rhodacmea filosa'') is a species of small, air-breathing, freshwater snail or limpet, a pulmonate gastropod in the family Planorbidae. ''Rhodacmea filosa'' is the type species of the genus ''Rhodacmea''. Distribution This species is endemic to the United States and was thought to be extinct, until its rediscovery in 2011.Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . It occurred in the Mobile River Basin rivers and their tributaries. The type locality is the Black Warrior River, south of Blount Springs, Alabama. Conrad T. A. (1834). "New fresh-water shells of the United States, with coloured illustrations, and a monograph of the genus ''Anculotus'' of Say; also a synopsis of the American naiads". Judah Dobson, Philadelphia, 76 pppage 57 Over the past 20 years, extensive surveys that included hundr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wicker Ancylid
The wicker ancylid (''Rhodacmea filosa'') is a species of small, air-breathing, freshwater snail or limpet, a pulmonate gastropod in the family Planorbidae. ''Rhodacmea filosa'' is the type species of the genus ''Rhodacmea''. Distribution This species is endemic to the United States and was thought to be extinct, until its rediscovery in 2011.Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . It occurred in the Mobile River Basin rivers and their tributaries. The type locality is the Black Warrior River, south of Blount Springs, Alabama. Conrad T. A. (1834). "New fresh-water shells of the United States, with coloured illustrations, and a monograph of the genus ''Anculotus'' of Say; also a synopsis of the American naiads". Judah Dobson, Philadelphia, 76 pppage 57 Over the past 20 years, extensive surveys that included hundr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodacmea Hinkleyi
''Rhodacmea'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . ''Rhodacmea'' is the type genus of the subfamily Rhodacmeinae. Anatomy These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill, which is necessary as, in their non-tidal habitat, these limpets never reach the surface for air. Species Species in the genus ''Rhodacmea'' include: * '' Rhodacmea elatior'' (Anthony, 1855) – Domed ancylid * ''Rhodacmea filosa'' (Conrad, 1834) – Wicker ancylid The wicker ancylid (''Rhodacmea filosa'') is a species of small, air-breathing, freshwater snail or limpet, a pulmonate gastropod in the family P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domed Ancylid
The domed ancylid (''Rhodacmea elatior'')Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . is a species of small freshwater snail or limpet, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies. Distribution This freshwater limpet is endemic to the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Planorbidae Gastropods described in 1855 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodacmea Elatior
The domed ancylid (''Rhodacmea elatior'')Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". '' PLoS ONE'' 6(5): e20496. . is a species of small freshwater snail or limpet, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies. Distribution This freshwater limpet is endemic to the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Planorbidae Gastropods described in 1855 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. As a result, planorbids are able to breathe oxygen more efficiently than other molluscs. The presence of hemoglobin gives the body a reddish colour. This is especially apparent in albino animals. Being air breathers like other ''Panpulmonata'', planorbids do not have gills, but instead have a lung. The foot and head of planorbids are rather small, while their thread-like tentacles are relatively long. Many of the species in this family have coiled shells that are planispiral, in other words, the shells are more or less coiled flat, rather than having an elevated spire as is the case in most gastropod shells. Although they carry their shell in a way that makes it appear to be dextral, the shell of coiled pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limpet
Limpets are a group of aquatic snails that exhibit a conical shell shape (patelliform) and a strong, muscular foot. Limpets are members of the class Gastropoda, but are polyphyletic, meaning the various groups called "limpets" descended independently from different ancestral gastropods. This general category of conical shell is known as "patelliform" (dish-shaped). All members of the large and ancient marine clade Patellogastropoda are limpets. Within that clade, the members of the Patellidae family in particular are often referred to as "true limpets". Other groups, not in the same family, are also called limpets of one type or another, due to the similarity of their shells' shape. Examples include the Fissurellidae ("keyhole limpet") family, which is part of the Vetigastropoda clade (many other members of the Vetigastropoda do not have the morphology of limpets) and the Siphonariidae ("false limpets"), which use a siphon to pump water over their gills. Behaviour and ecolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Genus
In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal family-group taxon is a nominal genus called the 'type genus'; the family-group name is based upon that of the type genus." Any family-group name must have a type genus (and any genus-group name must have a type species, but any species-group name may, but need not, have one or more type specimens). The type genus for a family-group name is also the genus that provided the stem to which was added the ending -idae (for families). :Example: The family name Formicidae has as its type genus the genus ''Formica'' Linnaeus, 1758. Botanical nomenclature In botanical nomenclature, the phrase "type genus" is used, unofficially, as a term of convenience. In the '' ICN'' this phrase has no status. The code uses type specimens for ranks up to fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John B
John Bryn Williams (born 1977), known as John B, is an English disc jockey and electronic music producer. He is widely recognised for his eccentric clothing and wild hair and his production of several cutting edge drum and bass tracks. John B ranked number 76 in ''DJ Magazine''s 2010 Top 100 DJs annual poll, announced on 27 October 2010. Career Williams was born on 12 July 1977 in Maidenhead, Berkshire. He started producing music around the age of 14, and now is the head of drum and bass record label Beta Recordings, together with its more specialist drum and bass sub-labels Nu Electro, Tangent, and Chihuahua. He also has releases on Formation Records, Metalheadz and Planet Mu. Williams was ranked 92nd drum and bass DJ on the 2009 ''DJ Magazine'' top 100. Style While his trademark sound has evolved through the years, it generally involves female vocals and trance-like synths (a style which has been dubbed "trance and bass", "trancestep" and "futurestep" by listeners). His m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
