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Ophiacanthida
Ophiacanthida is an order of echinoderms belonging to the class Ophiuroidea. The order contains two suborders, Ophiodermatina and Ophiacanthina, which include the following families: * Ophiodermatina , 1867 ** Ophiodermatidae ** Ophiomyxidae ** Ophiopezidae ** Ophiocomidae Ophiocomidae are a family of brittle stars of the suborder Ophiurina. Systematics and phylogeny Ophiocomidae has been placed (along with Ophionereididae) to the superfamily Ophiocomidea and infraorder Gnathophiurina or suborder Gnathophiurina ... * Ophiacanthina O'Hara, Hugall, Thuy, Stöhr & Martynov, 2017 ** Clarkcomidae ** Ophiacanthidae ** Ophiobyrsidae ** Ophiocamacidae ** Ophiopteridae ** Ophiotomidae ** Ophiojuridae References Ophiuroidea Echinoderm orders {{Ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiacanthidae
Ophiacanthidae is a family of brittle stars. Axel Vilhelm Ljungman circumscribed this taxon in 1867; he initially named the subfamily Ophiacanthinae within the family Amphiuridae Amphiuridae (commonly called long-armed burrowing brittle stars or burrowing brittle stars) are a large family of brittle stars of the suborder Gnathophiurina The Gnathophiurina are a group of Ophiuroidea mostly treated as suborder (but at .... Gordon L. J. Paterson promoted its rank to family in 1985. , genera include: * '' Ophiacantha'' * '' Ophiohamus'' * '' Brezinacantha'' References Ophiacanthida Echinoderm families Extant Early Cretaceous first appearances {{ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiuroidea
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 eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiojuridae
''Ophiojura'' is a genus of brittle star in its own family, Ophiojuridae. It has only one known species, ''Ophiojura exbodi'', collected by the EXBODI expedition from Banc Durand seamount off New Caledonia in 2011 at a depth of . The prefix 'Ophio' comes form the Ancient Greek word for serpent, and 'jura' is derived from the Jura Mountains, which lent its name to the Jurassic period. ''Ophiojura exbodi'' has eight arms, each long and bearing rows of sharp teeth leading to its multitude of jaws, which are also toothed. DNA and fossil evidence shows that it diverged from its nearest relatives 160–200 million years ago, with the best estimate 182 Ma, from the Early Jurassic to the Late Triassic. The following cladogram A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ... shows ''O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiodermatidae
Ophiodermatidae are a family of brittle stars in the order Ophiacanthida. Systematics and phylogeny Some fossils date as far back as the Changhsingian age, late in the Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ... period. The family includes the following living genera: * '' Bathypectinura'' * '' Cryptopelta'' * '' Diopederma'' * '' Distichophis'' * '' Ophiarachna'' * '' Ophiarachnella'' * '' Ophiochaeta'' * '' Ophiochasma'' * '' Ophioclastus'' * '' Ophioconis'' * '' Ophiocormus'' * '' Ophiocryptus'' * '' Ophioderma'' * '' Ophiodyscrita'' * '' Ophiolimna'' * '' Ophioncus'' * '' Ophiopaepale'' * '' Ophiopeza'' * '' Ophiopinax'' * '' Ophiopsammus'' * '' Ophiostegastus'' * '' Ophiurochaeta'' * '' Pectinura'' * '' Schizoderma'' References Ophiacanthida Lopingia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiomyxidae
Ophiomyxidae is a family of echinoderms belonging to the order Ophiacanthida Ophiacanthida is an order of echinoderms belonging to the class Ophiuroidea. The order contains two suborders, Ophiodermatina and Ophiacanthina, which include the following families: * Ophiodermatina , 1867 ** Ophiodermatidae ** Ophiomyxidae ** .... Genera Genera: * '' Astrogymnotes'' * Ophioblenna * Ophiomora * Ophiomyxa * Ophioconis * '' Neoplax'' Bell, 1884 * '' Ophiarachna'' Müller & Troschel, 1842 Ophiomyxa References Ophiacanthida Echinoderm families {{Ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiotomidae
Ophiotomidae is a family of brittle stars. It was originally introduced as a subfamily Ophiotominae under the family Ophiacanthidae Ophiacanthidae is a family of brittle stars. Axel Vilhelm Ljungman circumscribed this taxon in 1867; he initially named the subfamily Ophiacanthinae within the family Amphiuridae Amphiuridae (commonly called long-armed burrowing brittle stars .... The family has a worldwide distribution. Genera There are six genera: References Ophiacanthida Echinoderm families {{Ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiocomidae
Ophiocomidae are a family of brittle stars of the suborder Ophiurina. Systematics and phylogeny Ophiocomidae has been placed (along with Ophionereididae) to the superfamily Ophiocomidea and infraorder Gnathophiurina or suborder Gnathophiurina in different classifications. Genera The following genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ... are included in the family according to the World Register of Marine Species (WoRMS): World Register of Marine Species. Retrieved 2011-08-30. * Subfamily Ophiocominae **Genus '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophiocoma Erinaceus
''Ophiocoma erinaceus'' is an echinoderm, more specifically a brittle star of the Ophiocomidae family. Description ''Ophiocoma erinaceus'' is black with red tube feet. On the arm segments, there are three arm spines on one segment while the other has four. The next segment occurs in reverse order. In Hawaii, it is the largest brittle star, with sizes of the arms going up to 5 ½ inches, and the disk can be about 1 inch in diameter. Distribution & Habitat ''Ophiocoma erinaceus'' is distributed within the Indo-Pacific oceans and can be found under rocks and stones. Human Uses The saponin and antioxidants ''Ophiocoma erinaceus'' produces is the subject of interest to researchers as it has been studied for medical research. It has been observed that the saponin extracted from ''Ophiocoma erinaceus'' can decrease and inhibit the growth of HeLa HeLa () is an immortalized cell line used in scientific research. It is the oldest human cell line and one of the most common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderm
An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larvae, as adults echinoderms are recognisable by their usually five-pointed radial symmetry (pentamerous symmetry), and are found on the sea bed at every ocean depth from the intertidal zone to the abyssal zone. The phylum contains about 7,600 living species, making it the second-largest group of deuterostomes after the chordates, as well as the largest marine-only phylum. The first definitive echinoderms appeared near the start of the Cambrian. Echinoderms are important both ecologically and geologically. Ecologically, there are few other groupings so abundant in the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs and limbs; in some cases, they can undergo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
