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Vema (genus)
''Vema'' is a genus of deep-sea molluscs, monoplacophorans. The genus is named after the oceanographic Research Vessel ''Vema''. All ''Vema'' species have six pairs of gills. Species * ''Vema bacescui'' (Menzies, 1968) * ''Vema ewingi'' (Clarke & Menzies, 1959) * ''Vema levinae'' Warén, 1996 * ''Vema occidua ''Vema occidua'' is a species of monoplacophoran, a superficially limpet-like marine mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Aro ...'' B. A. Marshall, 2006 References Monoplacophora Mollusc genera {{Mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from the fossil record, and were thought to have become extinct 375 million years ago. Although the shell of many monoplacophorans is limpet-like in shape, they are not gastropods, nor do they have any close relation to gastropods. Definition Discussion about monoplacophorans is made difficult by the slippery definition of the taxon; some authors take it to refer to all non-gastropod mollusks with a single shell, or all single-shelled mollusks with serially repeated units; whereas other workers restrict the definition to cap-shaped forms, excluding spiral and other shapes of shell. The inclusion of the gastropod-like Bellerophontoidea within the group is also contentious. One attempt to resolve this confusion was to separate out the predom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Vessel Vema
The SV ''Mandalay'' is a three-masted schooner measuring pp, with a wrought iron hull. It was built as the private yacht ''Hussar (IV)'', and would later become the research vessel ''Vema'', one of the world's most productive oceanographic research vessels. The ship currently sails as the cruising yacht ''Mandalay'' in the Caribbean. E.F. Hutton's luxury yacht, ''Hussar IV'' ''Hussar'' (IV) was designed by Cox & Stevens and built in 1923 by Burmeister & Wain in Copenhagen for E. F. Hutton and his wife Marjorie Merriweather Post. The 585-ton luxury yacht had an iron-hull and represented the epitome of maritime luxury and glamour in her class. Interiors were designed by William Baumgarten & Co of New York, the first American firm to do the interior decoration of a ship abroad. Upon her completion in Denmark King Christian X was invited to inspect the ship prior to its maiden crossing to New York. It was one of the fastest yachts, breaking the transatlantic record in 10 days, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vema Bacescui
''Vema bacescui'' is a species of monoplacophoran, a superficially limpet-like marine mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti .... It is found in the Peru-Chile Trench of the southeastern Pacific Ocean. At 2.8 cm, it is relatively large for a monoplacophoran.Schwabe, Enrico (2008)A summary of reports of abyssal and hadal Monoplacophora and Polyplacophora (Mollusca) In: Martínez Arbizu, P. & Brix, S. (Eds) (2008) Bringing Light into Deep-sea Biodiversity. ''Zootaxa'', 1866, 1–574. References Monoplacophora Molluscs described in 1968 {{mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vema Ewingi
''Vema ewingi'' is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found at the northern end of the Peru-Chile Trench and other locations off the coast of Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ....Schwabe, Enrico (2008)A summary of reports of abyssal and hadal Monoplacophora and Polyplacophora (Mollusca) In: Martínez Arbizu, P. & Brix, S. (Eds) (2008) Bringing Light into Deep-sea Biodiversity. ''Zootaxa'', 1866, 1–574. References Monoplacophora Molluscs described in 1959 {{mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vema Levinae
''Vema levinae'' is a species of monoplacophoran, a superficially limpet-like marine mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti .... References Monoplacophora Molluscs described in 1996 {{mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vema Occidua
''Vema occidua'' is a species of monoplacophoran, a superficially limpet-like marine mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti .... References Monoplacophora Molluscs described in 2006 {{mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from the fossil record, and were thought to have become extinct 375 million years ago. Although the shell of many monoplacophorans is limpet-like in shape, they are not gastropods, nor do they have any close relation to gastropods. Definition Discussion about monoplacophorans is made difficult by the slippery definition of the taxon; some authors take it to refer to all non-gastropod mollusks with a single shell, or all single-shelled mollusks with serially repeated units; whereas other workers restrict the definition to cap-shaped forms, excluding spiral and other shapes of shell. The inclusion of the gastropod-like Bellerophontoidea within the group is also contentious. One attempt to resolve this confusion was to separate out the predom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
