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Comatulidae
Comatulidae is a family of comatulid crinoids. Since 2015, it replaces the family Comasteridae. Description and characteristics This family is of recent restoration, and still has no consensual description. However the description of the family Comasteridae remains partially valid. This family counts between 93 and 95 species, distributed in 21 genera, which makes it the second most diversified family of crinoids the behind Antedonidae, representing approximately 1/6th of known crinoid species. It contains most of the big species of shallow tropical feather stars, in particular in the Indo-Pacific. List of genera This family has been recently restored following genetic works from Charles Messing's team. It contains the following genera: * sub-family Comatellinae Summers, Messing, Rouse, 2014 ** genus '' Alloeocomatella'' Messing, 1995 -- 2 species ** genus '' Comatella'' AH Clark, 1908 -- 2 species ** genus '' Davidaster'' Hoggett & Rowe, 1986 -- 2 species ** genus '' N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anneissia Bennetti
''Oxycomanthus bennetti'', the Bennett's feather star, is a species of crinoid belonging to the family Comatulidae. It is found in shallow water in the Indo-Pacific between northern Australia and southeast Asia. Description ''Oxycomanthus bennetti'' is one of the larger species of Comatulidae, growing up to 30 cm. It is a filter-feeder, meaning it does not hunt down food, it captures food suspended in the water column to eat. It does this with 31–120 feathery arms, usually held up into the water in order to trap food, feeding on detritus, phytoplankton and zooplankton. The arms have numerous finger-like appendages known as pinnules, in order to increase the surface area on which food can be trapped. The mouth is on the upper side of the large, thick body, otherwise known as the centrodorsal. Attached to the centrodorsal are many long, robust cirri (3-4.5 cm). These cirri are used by ''O. bennetti'' to hold on to substrate in the beginning portion of their lives, after the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comasteridae
Comasteridae is a family of crinoids. This family is now considered obsolete, having been replaced by the family Comatulidae since 2015. Description and characteristics Members of this family are characterized by possession of one or paired blade-like or knob-like projections on a few to many of the outer segments of the oral pinnules (the side branches closest to the base of the arms) that together form structures called combs. In adults of most species, the mouth is offset from the center of the oral surface, often near the margin, and the anus lies centrally. In some, mouth and anus are both offset, while in a few, the mouth lies centrally and the anus is displaced, the arrangement in other crinoids. Comasterids are also unique among feather stars in other respects: some species in several genera have the centrodorsal, the aboral skeletal plate, reduced and bearing few or no anchoring hook-like cirri; whereas all other feather stars have symmetrical rays, many reef-dwelling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comactinia
''Comactinia'' is a genus of crinoids, characteristically with 10 arms, belonging to the family Comatulidae. There are three described species, two from the western Atlantic and one, '' Comactinia titan'', recently described from the western Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine .... References * Comatulidae Crinoid genera Taxa named by Austin Hobart Clark {{Crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davidaster
''Davidaster'' is a genus of crinoid Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...s. According to the World Register of Marine Species, a number of species that originally were included in the genus '' Nemaster'' are now included in ''Davidaster''. Members of this genus have wedge-shaped arms, except for the basal ones, often longer than they are wide. The mouth is off centre and there are no pinnule combs after pinnule 3. The primary comb has the teeth widely separated and confluent with the lateral edge of the segment. Species *Species '' Davidaster discoideus'' (Carpenter, 1888) :synonyms ''Nemaster discoidea'' (Carpenter, 1888) ::::''Nemaster insolitus'' AH Clark, 1917 *Species '' Davidaster rubiginosus'' (Pourtalès, 1869) :synonyms ''Nemaster iowensis'' Springer, 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarkcomanthus
''Clarkcomanthus'' is a genus of echinoderms belonging to the family Comatulidae. The species of this genus are found in Malesia Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. Th ..., Australia and East Africa. Species: *'' Clarkcomanthus albinotus'' *'' Clarkcomanthus alternans'' *'' Clarkcomanthus comanthipinna'' *'' Clarkcomanthus littoralis'' *'' Clarkcomanthus luteofuscum'' *'' Clarkcomanthus mirabilis'' *'' Clarkcomanthus mirus'' *'' Clarkcomanthus perplexum'' References Comatulidae Crinoid genera {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comaster
''Comaster'' is a genus of crinoids. Species The following species are included in the genus by the World Register of Marine Species: * ''Comaster audax'' Rowe, Hoggett, Birtles & Vail, 1986 * ''Comaster multifidus'' (Müller, 1841) * ''Comaster nobilis'' (Carpenter, 1884) (now synonym of ''Comaster schlegelii'') * ''Comaster schlegelii'' (Carpenter, 1881) Image:Comasteridae - Comaster nobilis-001.jpg, ''Comaster nobilis'' Image:Comaster schlegelii.JPG, ''Comaster schlegelii ''Comaster schlegelii'', the variable bushy feather star, is a crinoid in the family Comatulidae. It was previously classified as ''Comanthina schlegeli'' but further research showed that it was better placed in the genus ''Comaster''. It is fou ...'' References Comatulidae Crinoid genera {{Crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comanthus
''Comanthus'' is a genus of echinoderms belonging to the family Comatulidae Comatulidae is a family of comatulid crinoids. Since 2015, it replaces the family Comasteridae. Description and characteristics This family is of recent restoration, and still has no consensual description. However the description of the fam .... The species of this genus are found in Indian and Pacific Ocean. Species: *'' Comanthus briareus'' *'' Comanthus delicata'' *'' Comanthus gisleni'' *'' Comanthus imbricatus'' *'' Comanthus kumi'' *'' Comanthus novaezealandiae'' *'' Comanthus parvicirrus'' *'' Comanthus scintillus'' *'' Comanthus suavia'' *'' Comanthus taviana'' *'' Comanthus wahlbergii'' *'' Comanthus weberi'' References {{Taxonbar, from=Q3469160 Comatulidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articulata (Crinoidea)
Articulata are a subclass or superorder within the class Crinoidea, including the only living crinoid species. They are commonly known as sea lilies (stalked crinoids) or feather stars (unstalked crinoids). The Articulata are differentiated from the extinct subclasses by their lack of an anal plate in the adult stage and the presence of an entoneural system. Articulata first appeared in the fossil record during the Triassic period although other, now extinct crinoid groups, originated in the Ordovician. Characteristics Articulata exhibit pentamerous symmetry. The stalk, which consists of numerous disks held together by ligaments, supports a calyx or cup made of circlets of calcerous plates. In Comatulids, the stalk develops following the larval stage, but the juveniles shed all but the topmost disk to take up a free-living existence. Five often branched arms, which consist of articulated series of ossicles, extend from the oral plate and form the food-capture mechanism of Articula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nemaster
''Nemaster'' is a monotypic genus of echinoderms belonging to the family Comatulida Comatulida is an order of crinoids. Members of this order are known as feather stars and mostly do not have a stalk as adults. The oral surface with the mouth is facing upwards and is surrounded by five, often divided rays with feathery pinnules .... The only species is ''Nemaster grandis''. The species is found in Central America and Australia. References Comatulidae Crinoid genera Monotypic echinoderm genera {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capillaster
''Capillaster'' is a genus of crinoid Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...s. It contains the following species: * '' Capillaster asterias'' AH Clark, 1931 * '' Capillaster gracilicirra'' AH Clark, 1912 * '' Capillaster macrobrachius'' (Hartlaub, 1890) * '' Capillaster mariae'' (AH Clark, 1907) * '' Capillaster multiradiatus'' (Linnaeus, 1758) * '' Capillaster sentosus'' (Carpenter, 1888) * '' Capillaster squarrosus'' Messing, 2003 * '' Capillaster tenuicirrus'' AH Clark, 1912 References Crinoid genera Comatulidae {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |