brittle star taxonomy

Zoological Journal of the Linnean Society 114: 213–243. 9 avr. The site is experimental and under development. The number of brittle star species known from South Africa has escalated by 20%, after a recent SeaKeys taxonomic study. Ophiuroidea (brittle stars) Click on organism name to get more information. (1985). Skip to content. In: Weber, Siboga Expeditie. Unfortunately, technical difficulties prevent us from updating the taxonomy. A new species of brittle star, Ophiomitrella floorae, is recorded from the lower two meters of the Gronsveld Member (Maastricht Formation), of late Maastrichtian age (c. 66.7 Ma). 50: pp. (1960). the color is extremely variable but it is generally reddish brown, there may be some orange on the disk, too. There are a few species of shallow water brittle stars. Around 270 genera are known, these are distributed in 16 families, which makes them at the same time a relatively poorly diversified group structurally, compared with the other echinoderms. Antarctic Brittle Stars. 123084  The brittle star, Ophiopholus aculeata, constituted 7% of the diet, while the remainder was miscellaneous invertebrates and fish (mainly capelin and billfish). (2001). Asterozoa. M. E.J. Posted on Saturday,December 8, 2001 by Garry Fletcher. Part 1. New Zealand Oceanographic Institute Memoir. 18: 1-79, 19 pls. The most common brittle star is the long-armed brittle star (Amphipholis squamata), a … Posted in Antarctic ophiuroids | Leave a comment. Order Ophiurida Müller & Troschel, 1840. My subjects are taxonomy and phylogeny of marine invertebrate animals, especially focusing on brittle stars (Echinodermata). 336-351. Ophiolepis paucispina (Say, 1825) Family Amphiuridae Ljungman, 1867 Echinodermata, in: Costello, M.J. et al. (Ed.) Acta Naturalis Scientia . Accueil > Périodiques > European Journal of Taxonomy > 2013 > Temporary expansion to shelf depths rather than an onshore-offshore trend: the shallow-water rise and demise of the modern deep-sea brittle star family Ophiacanthidae (Echinodermata: Ophiuroidea) View Article Google Scholar 47. It is currently hibernating due to time constraints of its maintainers. While most common starfish have tubes under their limbs that move the entire body, Brittle sea stars use their slender and mobile arms to drag their body across the ocean floor. It’s not much of a loss because they can regenerate new arms easily. Mobile apps Our partners. Ophiothrix spiculata is a common species among algal holdfasts at Race Rocks. 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 (1961). Welcome to Brittle stars and basket stars - a taxonomy portal. The name comes from their habit of breaking off arms as a defense and to distract predators while the sea star escapes. Smooth brittle-star - Ophioderma longicauda. Funding from the National Science Foundation (NSF ANT-1043670 to ARM, NSF ANT-1043745 & OPP-0132032 to KMH) is gratefully acknowledged. Its arm’s spines are especially long, and each one has a number of small thorns on it. Acknowledgements. Ophiothrix spiculata: Brittle star–The Race Rocks Taxonomy. This research was made possible with assistance from the Captains and … Class Ophiuroidea Gray, 1840. Brittle stars are NOT fish, but are related to sea stars. Brittle stars or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish.They crawl across the sea floor using their flexible arms for locomotion. Brittlestar or Brittle Sea Star is common name for echinoderms belonging to the class Ophiuroidea. Search for: Archives. 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. Checklist of brittle-stars from the continental shelf of the State of Paraíba. See also: List of prehistoric brittle stars and List of echinodermata orders. 2016 - Ophuroidea (Brittle stars) and Concentricyloidea natural history, taxonomy, physiology, and body pattern. 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. Taxonomy. Disc The dorsal side of the disc is covered with short spinelets or longer spines, except for the conspicuous, naked radial shields. Hansson, H.G. Developmental and other studies based on modern organisms imply that asteroids and ophiuroids are not closely related within the echinoderms. ::Interesting Facts:: 1. 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. (2001). Ruby brittle star - Ophioderma rubicunda. 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. Koehler, R. (1922). Antarctic Ophiuroids (Echinodermata): Biology, Ecology, Taxonomy, Evolution. 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