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Helicoradomenia Acredema
''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=395145 on 2021-04-14 Some species in this genus inhabit mid-ocean ridges. Species * '' Helicoradomenia acredema'' Scheltema, 2000 * '' Helicoradomenia bisquama'' Scheltema, 2000 * '' Helicoradomenia juani'' Scheltema & Kuzirian, 1991 * '' Helicoradomenia parathermalis'' Salvini-Plawen, 2008 References Cavibelonia {{Solenogaster-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] |
Solenogaster
The Solenogastres (less often referred to as Neomeniomorpha), common name the solenogasters, are one class of small, worm-like, shell-less molluscs (Aplacophora), the other class being the Caudofoveata (Chaetodermomorpha). MolluscaBase eds. (2021). MolluscaBase. Solenogastres. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=2094 on 2021-04-14 Some recent literature, and recent molecular evidence, indicates that the Aplacophora may be polyphyletic, and therefore these taxonomists divide Solenogastres and Caudofoveata into separate classes. Morphology In contrast to all other molluscan classes, the Aplacophora have no shell, and are instead covered by aragonite, aragonitic sclerites (calcareous wikt:spicule, spicules), which can be solid or hollow. These spicules can be arranged perpendicular to one another within the cuticle to form a skeleton, or can stick up to form a palisade, or can lie flat against the cuticle. 80 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
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 gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mid-ocean Ridge
A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about and rises about above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate boundary. The rate of seafloor spreading determines the morphology of the crest of the mid-ocean ridge and its width in an ocean basin. The production of new seafloor and oceanic lithosphere results from mantle upwelling in response to plate separation. The melt rises as magma at the linear weakness between the separating plates, and emerges as lava, creating new oceanic crust and lithosphere upon cooling. The first discovered mid-ocean ridge was the Mid-Atlantic Ridge, which is a spreading center that bisects the North and South Atlantic basins; hence the origin of the name 'mid-ocean ridge'. Most oceanic spreading centers are not in the middle of their hosting ocean basis but regardless, are traditionally called mid-ocean rid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoradomenia Acredema
''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=395145 on 2021-04-14 Some species in this genus inhabit mid-ocean ridges. Species * '' Helicoradomenia acredema'' Scheltema, 2000 * '' Helicoradomenia bisquama'' Scheltema, 2000 * '' Helicoradomenia juani'' Scheltema & Kuzirian, 1991 * '' Helicoradomenia parathermalis'' Salvini-Plawen, 2008 References Cavibelonia {{Solenogaster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoradomenia Bisquama
''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=395145 on 2021-04-14 Some species in this genus inhabit mid-ocean ridges. Species * ''Helicoradomenia acredema ''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespeci ...'' Scheltema, 2000 * '' Helicoradomenia bisquama'' Scheltema, 2000 * '' Helicoradomenia juani'' Scheltema & Kuzirian, 1991 * '' Helicoradomenia parathermalis'' Salvini-Plawen, 2008 References Cavibelonia {{Solenogaster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoradomenia Juani
''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=395145 on 2021-04-14 Some species in this genus inhabit mid-ocean ridges. Species * ''Helicoradomenia acredema'' Scheltema, 2000 * ''Helicoradomenia bisquama ''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespeci ...'' Scheltema, 2000 * '' Helicoradomenia juani'' Scheltema & Kuzirian, 1991 * '' Helicoradomenia parathermalis'' Salvini-Plawen, 2008 References Cavibelonia {{Solenogaster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoradomenia Parathermalis
''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=395145 on 2021-04-14 Some species in this genus inhabit mid-ocean ridges. Species * ''Helicoradomenia acredema'' Scheltema, 2000 * ''Helicoradomenia bisquama'' Scheltema, 2000 * ''Helicoradomenia juani ''Helicoradomenia'' is a genus of solenogasters, shell-less, worm-like mollusks. MolluscaBase eds. (2021). MolluscaBase. Helicoradomenia Scheltema & Kuzirian, 1991. Accessed through: World Register of Marine Species at: http://www.marinespeci ...'' Scheltema & Kuzirian, 1991 * '' Helicoradomenia parathermalis'' Salvini-Plawen, 2008 References Cavibelonia {{Solenogaster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
