Isselicrinidae
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Isselicrinidae
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida. Subfamilies and genera * subfamily Diplocrininae Roux, 1981 ** genus '' Cenocrinus'' Thomson, 1864 -- 1 species ** genus '' Endoxocrinus'' AH Clark, 1908 -- 5 species * subfamily Metacrininae Klikushkin, 1977 ** genus '' Metacrinus'' Carpenter, 1882 -- 9 species ** genus '' Saracrinus'' AH Clark, 1923 -- 3 or 4 species Image:Endoxocrinus parrae.jpg, '' Endoxocrinus parrae'' Image:Endoxocrinus.jpg, '' Endoxocrinus sp.'' Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus'' Image:Cenocrinus asterius (Linnaeus, 1767).jpg, '' Cenocrinus asterius'' Image:Endoxocrinus (Diplocrinus) wyvillethomsoni.jpg, '' Endoxocrinus wyvillethomsoni'' Image:Image from page 221 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14598372209).jpg, '' Metacrinus interruptus'' Image:Haeckel Crinoidea 1 Saracrinus angulatus.jpg , '' Saracrinus angulatus'' ...
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Cenocrinus
''Cenocrinus'' is a monotypic genus of stalked crinoids in the family Isselicrinidae. The great West Indian sea lily (''Cenocrinus asterius'') is the only species in the genus and is found in deep waters in the Caribbean Sea and Gulf of Mexico. Description Like other sea lilies, ''Cenocrinus asterius'' has a crown consisting of a calyx surrounded by feathery arms splayed out to create a filtration fan. The crown is supported by a long slender stem which is attached to the substrate at its base. The stem is semi-rigid but flexible and is made up of disc-shaped ossicles known as columnals, joined together by ligaments. At each node between the columnals there is a whorl of five cirri. These are also articulated and are tipped with claws and when the cirri come into contact with other objects, they cling to them and help stabilise the sea lily and keep it upright. Distribution ''Cenocrinus asterius'' is found in the Caribbean Sea, the Gulf of Mexico and off the coast of Mexico ...
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Cenocrinus Asterius
''Cenocrinus'' is a monotypic genus of stalked crinoids in the family Isselicrinidae. The great West Indian sea lily (''Cenocrinus asterius'') is the only species in the genus and is found in deep waters in the Caribbean Sea and Gulf of Mexico. Description Like other sea lilies, ''Cenocrinus asterius'' has a crown consisting of a calyx surrounded by feathery arms splayed out to create a filtration fan. The crown is supported by a long slender stem which is attached to the substrate at its base. The stem is semi-rigid but flexible and is made up of disc-shaped ossicles known as columnals, joined together by ligaments. At each node between the columnals there is a whorl of five cirri. These are also articulated and are tipped with claws and when the cirri come into contact with other objects, they cling to them and help stabilise the sea lily and keep it upright. Distribution ''Cenocrinus asterius'' is found in the Caribbean Sea, the Gulf of Mexico and off the coast of Mexico ...
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Metacrinus
''Metacrinus'' is a genus of stalked crinoids in the family Isselicrinidae. Members of this genus live on hard surfaces in deeper parts of the ocean. The genus has extant species and is also represented in the fossil record. Members of the genus grow to a maximum height of and are found in the eastern Pacific Ocean 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 contin ... from Japan to Australia. Species The World Register of Marine Species lists the following species in the genus: *'' Metacrinus costatus'' Carpenter, 1884 *'' Metacrinus interruptus'' Carpenter, 1884 *'' Metacrinus levii'' Améziane-Cominardi, 1990 *'' Metacrinus musorstomae'' Roux, 1981 *'' Metacrinus nodosus'' Carpenter, 1884 *'' Metacrinus rotundus'' Carpenter, 1885 *'' Metacrinus serratus'' Döderlein, 1907 *'' M ...
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Isselicrinidae
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida. Subfamilies and genera * subfamily Diplocrininae Roux, 1981 ** genus '' Cenocrinus'' Thomson, 1864 -- 1 species ** genus '' Endoxocrinus'' AH Clark, 1908 -- 5 species * subfamily Metacrininae Klikushkin, 1977 ** genus '' Metacrinus'' Carpenter, 1882 -- 9 species ** genus '' Saracrinus'' AH Clark, 1923 -- 3 or 4 species Image:Endoxocrinus parrae.jpg, '' Endoxocrinus parrae'' Image:Endoxocrinus.jpg, '' Endoxocrinus sp.'' Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus'' Image:Cenocrinus asterius (Linnaeus, 1767).jpg, '' Cenocrinus asterius'' Image:Endoxocrinus (Diplocrinus) wyvillethomsoni.jpg, '' Endoxocrinus wyvillethomsoni'' Image:Image from page 221 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14598372209).jpg, '' Metacrinus interruptus'' Image:Haeckel Crinoidea 1 Saracrinus angulatus.jpg , '' Saracrinus angulatus'' ...
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Metacrinus Interruptus
''Metacrinus'' is a genus of stalked crinoids in the family Isselicrinidae. Members of this genus live on hard surfaces in deeper parts of the ocean. The genus has extant species and is also represented in the fossil record. Members of the genus grow to a maximum height of and are found in the eastern Pacific Ocean 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 contin ... from Japan to Australia. Species The World Register of Marine Species lists the following species in the genus: *'' Metacrinus costatus'' Carpenter, 1884 *'' Metacrinus interruptus'' Carpenter, 1884 *'' Metacrinus levii'' Améziane-Cominardi, 1990 *'' Metacrinus musorstomae'' Roux, 1981 *'' Metacrinus nodosus'' Carpenter, 1884 *'' Metacrinus rotundus'' Carpenter, 1885 *'' Metacrinus serratus'' Döderlein, 1907 *'' M ...
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Metacrinus Rotundus
''Metacrinus rotundus'', the Japanese sea lily, is a marine invertebrate, a species of stalked crinoid in the family Isselicrinidae. It is a species found off the west coast of Japan, and is living near the edge of the continental shelf, around 100–150m deep. This is the shallowest species among the extant stalked crinoids. Description In appearance, the Japanese sea lily resembles a feather duster. It has a central mouth surrounded by a crown of many-branched feeding arms. These are jointed and can coil up or unroll to expose the feathery pinnules on either side to the current. Each pinnule has several rows of tube feet and a central ambulacral groove that leads to a groove on the arm that continues down to the mouth. The crown is supported by a tough stalk composed of calcareous ossicles bound together by ligaments. At the base of the stalk is a disc-like sucker and the sides of the stalk bear five whorls of cirri (clawed appendages). The stalk continues lengthening during ...
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Isocrinida
Isocrinida is an order of sea lilies which contains four extant families. Characteristics Members of this order are characterised by having a "heteromorphic" stalk; the stalk consists of a series of nodes with cirri, interspersed by several nodes without cirri. There are additionally a whorl of cirri at the base on which the animal perches. The calyx is a shallow cup consisting of five basals and five radials. Families * Suborder Isocrinina Sieverts-Doreck, 1952 ** family Cainocrinidae Simms, 1988 -- 1 genus (1 species) ** family Isocrinidae Gislén, 1924 -- 3 genus (3 species) ** family Isselicrinidae Klikushkin, 1977 -- 4 genus (18 species) ** family Proisocrinidae Rasmussen, 1978 -- 1 genus (1 species) * Suborder Pentacrinitina Gray, 1842 † ** family Pentacrinitidae Gray, 1842 † Image:Neocrinus decorus.jpg, '' Neocrinus decorus'' ( Isocrinidae) Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus'' (Isselicrinidae) Image:Proisocrinus ruberrimus.jpg, '' ...
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Endoxocrinus Parrae
''Endoxocrinus parrae'' is a species of stalked crinoids of the family Isselicrinidae. It is the most commonly found isocrinine species in west Atlantic Ocean. Morphology As members of the order Isocrinida, ''E. parrae'' possess a heteromorphic stalk that is made of calcareous nodal columns. Their body is mostly made of porous ossicles, with minimal soft tissue connecting the calcareous structure. The stalks can measure 50.5 cm in some subspecies, but average between 10.2 cm and 23.5 cm. The stalks average between 4–5mm in diameter, and are connected to between 23 and 58 feeding arms that branch off radially around the mouth and anus. While some subspecies of ''E. parrae'' possess arms with a smooth dorsal surface, others have been shown to exhibit a serrated dorsal surface, while others have shown morphology that is between the two characteristics, not quiet smooth but not fully serrated. Cirri allow the crinoid to attach itself to the sediment and continue upw ...
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Endoxocrinus
''Endoxocrinus'' is a genus of echinoderms belonging to the family Pentacrinitidae. The species of this genus are found in Western Europe, America, Southeastern Asia and Australia. Species: *'' Endoxocrinus alternicirrus'' *'' Endoxocrinus maclearanus'' *''Endoxocrinus parrae ''Endoxocrinus parrae'' is a species of stalked crinoids of the family Isselicrinidae. It is the most commonly found isocrinine species in west Atlantic Ocean. Morphology As members of the order Isocrinida, ''E. parrae'' possess a heteromorphi ...'' *'' Endoxocrinus sibogae'' *'' Endoxocrinus wyvillethomsoni'' References Isselicrinidae Crinoid genera {{Crinoidea-stub ...
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Endoxocrinus Wyvillethomsoni
''Endoxocrinus'' is a genus of echinoderms belonging to the family Pentacrinitidae. The species of this genus are found in Western Europe, America, Southeastern Asia and Australia. Species: *'' Endoxocrinus alternicirrus'' *'' Endoxocrinus maclearanus'' *''Endoxocrinus parrae ''Endoxocrinus parrae'' is a species of stalked crinoids of the family Isselicrinidae. It is the most commonly found isocrinine species in west Atlantic Ocean. Morphology As members of the order Isocrinida, ''E. parrae'' possess a heteromorphi ...'' *'' Endoxocrinus sibogae'' *'' Endoxocrinus wyvillethomsoni'' References Isselicrinidae Crinoid genera {{Crinoidea-stub ...
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Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opin ...
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