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Ophiotrichidae
Ophiotrichidae are a family of brittle stars within the suborder Gnathophiurina. All of its species have arms with delicate, translucent, thorny spines. Their arms are flexible in all directions. Their jaws contain clusters of well-developed tooth papillae on the apex but not on the sides. There are no mouth papillae. Inside the mouth edge there is a second pair of tube feet. They show large radial shields. The dorsal surface of the disc is covered with spines and thorny towers. Systematics Ophiotrichidae contains the following genera: *''Asteria (echinoderm), Asteria'' (''nomen dubium'') *''Gymnolophus'' Brock, 1888 *''Lissophiothrix'' H.L. Clark, 1938 *''Macrophiothrix'' H.L. Clark, 1938 *''Ophioaethiops'' Brock, 1888 *''Ophiocampsis'' Duncan, 1887 *''Ophiocnemis'' Müller & Troschel, 1842 *''Ophiogymna'' Ljungman, 1866 *''Ophiolophus'' Marktanner-Turneretscher, 1887 *''Ophiomaza'' Lyman, 1871 *''Ophiophthirius'' Döderlein, 1898 *''Ophiopsammium'' Lyman, 1874 *''Ophiopteron'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothela Mirabilis
''Ophiothela mirabilis'' is a species of ophiuroid brittle star within the family ''Ophiotrichidae''. ''O. mirabilis'' is an epizoic species which have a non-parasitic relationship with host sponges or gorgonians. Although native to the Pacific Ocean, it has invaded the Caribbean and southwestern Atlantic since late 2000. Many of its characteristics, including reproduction and diet, allow O. mirabilis opportunities to quickly propagate and spread through habitats. Characteristics ''Ophiothela mirabilis'' is a very minute brittle star, which rarely reaches more than 1 cm including arms. It has in general 6 arms, however because of its mode of reproduction by division ( scissiparity), its shape is often very irregular (one half more developed than the other, only 4 or 5 arms, or on the contrary 7 or 8...). Its coloration is extremely variable and made believe for a long time in a complex of several species: it can thus be orange plain or white mottled with bright colors (in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brittle Star
Brittle stars, serpent stars, or ophiuroids (; ; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms for locomotion. The ophiuroids generally have five long, slender, whip-like arms which may reach up to in length on the largest specimens. The Ophiuroidea contain two large clades, Ophiurida (brittle stars) and Euryalida (basket stars). Over 2,000 species of brittle stars live today. More than 1,200 of these species are found in deep waters, greater than 200 m deep. Range The ophiuroids diverged in the Early Ordovician. Ophiuroids can be found today in all of the major marine provinces, from the poles to the tropics. Basket stars are usually confined to the deeper parts of this range; Ophiuroids are known even from abyssal (>6,000 m) depths. However, brittle stars are also common members of reef communities, where they hide under rocks and even w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix
''Ophiothrix'' is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. At present a total of 93 Ophiothrix species have been recognized. It is considered as one of the most interesting genera because of the presence of its brilliant colors and associations with coral and sponges as well. This genus has been labelled particularly difficult with respect to taxonomy, due to a high degree of variability in characters that are described is a morphological aspect. Evolution The fossil record of brittle stars can be traced back around 500 million years to Early Ordovician period. Despite the fact there have been a considerable number of fossils reported from Paleozoic, Mesozoic and Cenozoic periods, a startlingly little amount is known about the evolutionary history of the group. Paleozoic ophiuroids bear an uncanny resemblance to the modern relatives with respect to ambulacral plate pairs which have been fused firmly int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrophiothrix
''Macrophiothrix'' is a genus of brittle star Brittle stars, serpent stars, or ophiuroids (; ; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms for locomot ...s. Species *'' Macrophiothrix albolineata'' (H.L. Clark, 1938) *'' Macrophiothrix albostriata'' (H.L. Clark, 1928) *'' Macrophiothrix aspidota'' (Müller & Troschel, 1842) *'' Macrophiothrix bellax'' (Koehler, 1922) *'' Macrophiothrix belli'' (Döderlein, 1896) *'' Macrophiothrix caenosa'' Hoggett, 2006 *'' Macrophiothrix callizona'' H.L. Clark, 1938 *'' Macrophiothrix capillaris'' (Lyman, 1879) *'' Macrophiothrix coerulea'' (Djakonov, 1930) *'' Macrophiothrix demessa'' (Lyman, 1861) *'' Macrophiothrix elongata'' H.L. Clark, 1938 *'' Macrophiothrix encarsia'' (H.L. Clark, 1939) *'' Macrophiothrix expedita'' (Koehler, 1905) *'' Macrophiothrix galatheae'' (Lütken, 1872) *'' Macrophiothr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix Angulata
''Ophiothrix angulata'', the angular brittle star, is a species of marine invertebrate in the order Ophiurida. It is found in the warm waters of the western Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. Description Like other brittle stars, ''O. angulata'' has a central disc and five slender, unbranched, jointed arms; the spines on the arms are twice as long as the arms are wide. It is somewhat variable in appearance and difficult to distinguish from other species of brittle star occurring in the same localities. The colour also varies, but populations in Florida are often reddish-orange, with a longitudinal white line along the upper surface of the arms. This brittle star grows to a disc diameter of about . Distribution and habitat ''O. angulata'' occurs in the western Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. Its range extends from North Carolina southwards to Brazil and its depth range from subtidal to . Its typical habitat is on reef rubble, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix Suensonii
''Ophiothrix'' is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. At present a total of 93 Ophiothrix species have been recognized. It is considered as one of the most interesting genera because of the presence of its brilliant colors and associations with coral and sponges as well. This genus has been labelled particularly difficult with respect to taxonomy, due to a high degree of variability in characters that are described is a morphological aspect. Evolution The fossil record of brittle stars can be traced back around 500 million years to Early Ordovician period. Despite the fact there have been a considerable number of fossils reported from Paleozoic, Mesozoic and Cenozoic periods, a startlingly little amount is known about the evolutionary history of the group. Paleozoic ophiuroids bear an uncanny resemblance to the modern relatives with respect to ambulacral plate pairs which have been fused firmly int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix Spiculata
''Ophiothrix spiculata'', the western spiny brittle star, is a species of marine invertebrate in the order Ophiurida. It is found along the Pacific coast of North and South America from below the San Francisco Bay to Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac .... Individuals come in a variety of colors, although usually with orange longitudinal stripes on the arms, and the body can measure up to 2 cm across. This species was first described by J. L. Le Conte in 1851. References Ophiotrichidae Echinoderms described in 1851 Taxa named by John Lawrence LeConte {{Ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix Fragilis
''Ophiothrix fragilis'' is a species of brittle star in the order Ophiurida. It is found around the coasts of western Europe and is known in Britain as the common brittle star. It is also found along the coast of South Africa where it is known as the hairy brittle star. Description The common brittle star is extremely variable in colouration, ranging from violet, purple or red to yellowish or pale grey, often spotted with red. The arms are usually white or grey with pink bands. The central disc is about one centimetre in diameter with the five arms being about five times as long. The disc is clothed in five rays of spines radiating from a spiny centre. Between these are five pairs of triangular plates, each pair forming a heart shaped pattern. The slender tapering arms are quite distinct from the disc and are covered with overlapping scales.John Barrett and C M Young, ''Collins Pocket Guide to the Sea Shore'' (1958) p.180 The dorsal arm plates are naked and have a longitudinal ke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiothrix Foveolata
''Ophiothrix'' is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. At present a total of 93 Ophiothrix species have been recognized. It is considered as one of the most interesting genera because of the presence of its brilliant colors and associations with coral and sponges as well. This genus has been labelled particularly difficult with respect to taxonomy, due to a high degree of variability in characters that are described is a morphological aspect. Evolution The fossil record of brittle stars can be traced back around 500 million years to Early Ordovician period. Despite the fact there have been a considerable number of fossils reported from Paleozoic, Mesozoic and Cenozoic periods, a startlingly little amount is known about the evolutionary history of the group. Paleozoic ophiuroids bear an uncanny resemblance to the modern relatives with respect to ambulacral plate pairs which have been fused firmly int ... [...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 catalogue and 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
