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Paulasteriidae
''Paulasterias'' is a genus of sea star Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, ophiuroids, which are correctly referred to ...s within the monotypic family Paulasteriidae. References Forcipulatacea Asteroidea genera {{Asteroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulasterias Mcclaini
''Paulasterias mcclaini'' is a species of starfish in the family Paulasteriidae. It is found in deep water at hydrothermal vents. Taxonomy This species was collected by the marine biologist Craig McClain and first described by echinoderm specialist Christopher Mah in 2015, being named ''Paulasterias mcclaini'' in honour of its finder. Along with its sister species '' Paulasterias tyleri'', also found at hydrothermal vents, it differed markedly from other known starfish species, so the new family Paulasteriidae in the superorder Forcipulatacea was created to accommodate the two species. They are the first starfish species known from hydrothermal vents. Description ''Paulasterias mcclaini'' is a six-armed starfish with slender tapering arms. Larger specimens have a thick fleshy skin on the aboral (upper) surface, with spongy tissue underneath, which conceals the dermal plates. It is a pink starfish, covered with short spines. Distribution and habitat This starfish was found as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulasterias Tyleri
''Paulasterias tyleri'' is a species of starfish in the family Paulasteriidae. It is found in deep water at hydrothermal vents in the Antarctic. It is the type species of the newly erected genus ''Paulasterias'', the only other member of the genus being ''Paulasterias mcclaini''. History ''Paulasterias tyleri'' was discovered during a deep sea research cruise organized by the National Oceanography Centre. It was the first starfish to be found living as part of a hydrothermal vent community and was not closely related to any known starfish species so that it was placed in a new family. Its nearest living relative lives in the Ross Sea on the other side of the Antarctic continent some two thousand miles away. Description ''Paulasterias tyleri'' is a seven-armed starfish and is whitish or pale pink. It has a thick fleshy skin on the aboral (upper) surface, with spongy tissue underneath it. The skin is rough, being clad with short spines. Distribution ''Paulasterias tyleri'' is foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forcipulatacea
The Forcipulatacea are a superorder of sea stars. Subdivision * order Forcipulatida * order Brisingida The Brisingids are deep-sea-dwelling starfish in the order Brisingida. Description These starfish have between 6 to 18 long, attenuated arms which they use for suspension feeding. Other characteristics include a single series of marginals, a fu ... * incertae sedis: ** family Paulasteriidae References Asteroidea {{Asteroidea-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] |
Sea Star
Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class Asteroidea. About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropics, tropical zones to frigid, polar regions of Earth, polar regions. They are found from the intertidal zone down to abyssal zone, abyssal depths, at below the surface. Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates. Many species are brightly coloured in various shades of red or orange, while others are blue, grey or brown. Starfish have tube fee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
