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Poromyoidea
Poromyoidea is a superfamily of molluscs. It used to contain only the family Poromyidae, but now it also contains Cetoconchidae , as ''Cetoconcha'' was removed from Poromyidae and given its own family, according to the World Register of Marine Species. Families and genera Members of Poromyoidea are: * Cetoconchidae ** ''Cetoconcha'' * Poromyidae **'' Cetomya'' ** '' Dermatomya'' ** ''Dilemma A dilemma ( grc-gre, δίλημμα "double proposition") is a problem offering two possibilities, neither of which is unambiguously acceptable or preferable. The possibilities are termed the ''horns'' of the dilemma, a clichéd usage, but disti ...'' ** †'' Liopistha'' ** '' Lissomya'' ** '' Poromya'' References External links Mollusc superfamilies Anomalodesmata {{Mollusc-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superfamily (zoology)
In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family, order, class, phylum, kingdom, domain. While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behaviour, methods based on genetic analysis have opened the road to cladistics. A given rank subsumes under it less general categories, that is, more specific descriptions of life forms. Above it, each rank is classified within more general categories of organisms and groups of organisms related to each other through inheritance of traits or features from common ancestors. The rank of any ''species'' and the description of its ''genus'' is ''basic''; which means that to identify a particular organism, it is usually not necessary to specify ranks other than these first two. Consider a particular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molluscs
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 taxon, 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 biology, marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater mollusc, freshwater and Terrestrial molluscs, 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 Taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologically advanced of all inve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poromyidae
Poromyidae is a family of saltwater clams, marine bivalve molluscs in the order Anomalodesmata. The genus ''Dilemma'', described in 2008, is remarkable for being a predator of copepods, which is very unusual for a sessile mollusc. Genera and species Genera and species within the family Poromyidae include: *'' Cetomya'' Dall, 1889 *'' Dermatomya'' Dall, 1889 **'' Dermatomya buttoni'' Dall, 1916 ** '' Dermatomya mactroides'' ( Dall, 1889) * ''Dilemma'' Leal, 2008 *'' Lissomya'' Krylova, 1997 * '' Poromya'' Forbes, 1844 ** '' Poromya albida'' Dall, 1886 ** '' Poromya beringiana'' ( Dall, 1916) ** '' Poromya elongata'' Dall, 1886 ** ''Poromya granulata'' (Nyst and Westendorp, 1839) ** '' Poromya houbricki'' Bernard, 1989 ** '' Poromya laevis'' E. A. Smith, 1885 ** '' Poromya leonina'' ( Dall, 1916) ** '' Poromya malespinae'' (Ridewood, 1903) ** '' Poromya neaeroides'' Sequenza, 1876 ** '' Poromya neozelanica'' (Dell Dell is an American based technology company. It develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetoconchidae
''Cetoconcha'' is the only extant genus of saltwater clams in the family Cetoconchidae. Species * '' Cetoconcha alephtinae'' (Krylova, 1991) * '' Cetoconcha angolensis'' Allen & Morgan, 1981 * '' Cetoconcha atypha'' Verrill and Bush, 1898 * '' Cetoconcha boucheti'' Poutiers & Bernard, 1995 * '' Cetoconcha braziliensis'' Allen & Morgan, 1981 * ''Cetoconcha bulla'' ( Dall, 1881) * '' Cetoconcha ceylonensis'' Knudsen, 1970 * '' Cetoconcha elegans'' (Krylova, 1991) * '' Cetoconcha exigua'' Poutiers & Bernard, 1995 * '' Cetoconcha forbesi'' (H. Adams, 1875) * '' Cetoconcha galatheae'' Knudsen, 1970 * '' Cetoconcha gilchristi'' (G.B. Sowerby III, 1904) * ''Cetoconcha gloriosa'' (Prashad, 1932) * ''Cetoconcha hyalina'' (Hinds, 1843) * ''Cetoconcha indica'' Ray, 1952 * ''Cetoconcha malespinae'' Ridewood, 1903 * ''Cetoconcha margarita'' ( Dall, 1886) * ''Cetoconcha panamensis'' (Dall, 1908) * ''Cetoconcha pelseneeri'' Pelseneer, 1911 * ''Cetoconcha sarsii'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetoconcha
''Cetoconcha'' is the only extant genus of saltwater clams in the family Cetoconchidae. Species * '' Cetoconcha alephtinae'' (Krylova, 1991) * '' Cetoconcha angolensis'' Allen & Morgan, 1981 * '' Cetoconcha atypha'' Verrill and Bush, 1898 * '' Cetoconcha boucheti'' Poutiers & Bernard, 1995 * '' Cetoconcha braziliensis'' Allen & Morgan, 1981 * ''Cetoconcha bulla'' ( Dall, 1881) * '' Cetoconcha ceylonensis'' Knudsen, 1970 * '' Cetoconcha elegans'' (Krylova, 1991) * '' Cetoconcha exigua'' Poutiers & Bernard, 1995 * '' Cetoconcha forbesi'' (H. Adams, 1875) * '' Cetoconcha galatheae'' Knudsen, 1970 * '' Cetoconcha gilchristi'' (G.B. Sowerby III, 1904) * ''Cetoconcha gloriosa'' (Prashad, 1932) * ''Cetoconcha hyalina'' (Hinds, 1843) * ''Cetoconcha indica'' Ray, 1952 * ''Cetoconcha malespinae'' Ridewood, 1903 * ''Cetoconcha margarita'' ( Dall, 1886) * ''Cetoconcha panamensis'' (Dall, 1908) * ''Cetoconcha pelseneeri'' Pelseneer, 1911 * ''Cetoconcha sarsii'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dilemma (bivalve)
''Dilemma'' is a genus of marine bivalves of the family Poromyidae. The genus is remarkable for encompassing predators of isopods and ostracods, unusual for sessile molluscs. One species is known from the western Atlantic Ocean (Straits of Florida) and three from across the Pacific. Specimens have been found at depths between . The name of the genus refers to the dilemma A dilemma ( grc-gre, δίλημμα "double proposition") is a problem offering two possibilities, neither of which is unambiguously acceptable or preferable. The possibilities are termed the ''horns'' of the dilemma, a clichéd usage, but disti ... that the author of the new genus faced while diagnosing it. Species There are four species: * '' Dilemma frumarkernorum'' Leal, 2008 * '' Dilemma inexpectatum'' (Crozier, 1966) * '' Dilemma japonicum'' Sasaki & Leal, 2008 * '' Dilemma spectralis'' Leal, 2008 References Poromyidae Bivalve genera {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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