The deep-sea Ophiuroidea of the north Atlantic Ocean. The name comes from their habit of breaking off arms as a defense and to distract predators while the sea star escapes. Common Name: Brittle Star Scientific Name: Ophiura ophiura Phylum: Echinodermata Class: Ophiuroidea Other Taxonomy: Subphylum: Asterozoa Specimen #:44 Circumstance: Observed in lab and the bio tank Specimen Condition: Specimen on the left was alive and the specimen on the right was dead Location: Alfred bio lab and Alfred bio tank Typical Habitat: Many of the ophiuroids are rarely … The most common brittle star is the long-armed brittle star (Amphipholis squamata), a … Smooth brittle-star - Ophioderma longicauda. From 2007, I am fascinated by basket stars which is plant-like brittle star and my description of new species reaching to more than 10. This service is powered by LifeWatch Belgium, http://biodiversitylibrary.org/page/2273511, http://nzetc.victoria.ac.nz/tm/scholarly/tei-Vic26Zool.html, https://www.biodiversitylibrary.org/page/12079779, https://www.biodiversitylibrary.org/page/23927321, To Biological Information System for Marine Life (BISMaL), To Yale Peabody Museum of Natural History (YPM IZ 078711). Brittle stars (Ophiurida) are echinoderms, the same family that includes sea stars (commonly called starfish), sea urchins, sand dollars, and sea cucumbers. There is also a Paleozoic order, the Stenurida. Common brittle stars are epifaunal and live in extremely large groups offshore (as many as 2000 individuals recorded) known as brittle star beds. 1995, ... Smith AB, Paterson GLJ, Lafay B (1995) Ophiuroid phylogeny and higher taxonomy: morphological, molecular and palaeontological perspectives. Also, a Paleozoic order exists, the Stenurida. Brittle star, also called serpent star, any of the 2,100 living species of marine invertebrates constituting the subclass Ophiuroidea (phylum Echinodermata). Smooth Brittle Star – Ophioderma longicauda The Smooth Brittle Star, also known as the Snake Brittle Star or Brown Brittle Star, is a species in the class of the Ophiuroidea (Brittle Stars), and thus belongs to the phylum of the Echinodermata. Ophiuroids, or brittle stars, ... arrangements are fairly conserved and consistent with our current understanding of brittle star phylogeny and taxonomy. Crinoids are marine animals that make up the class Crinoidea, one of the classes of the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. Their long, thin arms—usually five and often forked and spiny—are distinctly set off from the small disk-shaped body. Brittle Star - Taxonomy. Frontiers in Zoology. Fell, H. B. Antarctic Ophiuroids (Echinodermata): Biology, Ecology, Taxonomy, Evolution. Zoological Journal of the Linnean Society 114: 213–243. The taxonomy of brittle stars, scientifically known as ophiuroids, is back on track after a 40 year lull during which no work was carried out on the regional taxonomy of the group. Unfortunately, technical difficulties prevent us from updating the taxonomy. The brittle star, Ophiopholus aculeata, constituted 7% of the diet, while the remainder was miscellaneous invertebrates and fish (mainly capelin and billfish). 9 avr. Stenurid morphology, in contrast, suggests a close common ancestry for the two; the nature of the ambulacral plates is important, but even their general form is transitional. Part 1. Ophioderma phoenium H. L. Clark, 1918 – smooth brittle star : Species: Ophioderma rubicundum Lütken, 1856 – ruby brittle star, ruby brittle star : Species: Ophioderma squamosissimum Lütken, 1856 – scaly brittle star, scaly brittle star : Species: Ophioderma variegatum Lütken, 1856 August 2016; Meta. Ordres de rang inférieur Euryalida Ophiurida Amphilepidida Ophiacanthida Ophioleucida Ophioscolecida Classification phylogénétique Position: Asterozoa Ophiuroidea Asteroidea Les Ophiures (Ophiuroidea) sont une classe d' Échinodermes proche des étoiles de mer . Acta Naturalis Scientia . Between 2,064 and 2,122 species of brittle stars are currently known, but the total number of modern species may be over 3,000. Sea star, any marine invertebrate of the class Asteroidea (phylum Echinodermata) having rays, or arms, surrounding an indistinct central disk. View Article Google Scholar 47. These marine invertebrates move very slowly along the sea bed. (1961). Fell, H.B. It is currently hibernating due to time constraints of its maintainers. Ophiurans of the Philippine Seas and adjacent waters. There are over 2,000 different species of brittle stars worldwide. 336-351. Synoptic Keys to the Genera of Ophiuroidea, Zoology Publications, Victoria University of Wellington, New Zealand, 26: 1-44. I challenged crowd funding in 2014 and promoted DNA taxonomy of a basket star related species, Asteronyx loveni in Japan. Ophiomyxa flaccida (Say, 1825) Family Ophiolepididae Ljungman, 1867. Antarctic Brittle Stars. There is also a Paleozoic order, the Stenurida. These breaks can occur anywhere beyond the disc and the lost portions can be regenerated. Welcome to Brittle stars and basket stars - a taxonomy portal. Acknowledgements. Koehler, R. (1904). Ophiuroidea (brittle stars) Click on organism name to get more information. Drawing of a basic cladogram for brittle star Common Name and "meaning": -Brittle Stars are very fragile and can cast off one or more arms if disturbed or caught by a predator. (urn:lsid:marinespecies.org:taxname:123084), The webpage text is licensed under a Creative Commons Attribution 4.0 License, (urn:lsid:marinespecies.org:taxname:123084). 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