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Amphiodia Pulchella
''Amphiodia pulchella'' is a species of brittle star belonging to Amphiuridae, a diverse family of the Ophiurida order. Description This species has an echinoderm body plan with a central disk and five arms used for locomotion. ''A. pulchella'' is composed of a calcium carbonate skeleton and a series of vessels used to move water throughout the body. This species also has tube feet with no suction cups that are used for feeding and sensing the surrounding environment rather than locomotion. Instead, they move by twisting their arms and using nearby objects to propel themselves forward. ''Amphiodia pulchella'' are typically a gray or reddish brown color with fine scales covering the central disc. ''A.pulchella'' typically burrow their central disc beneath soft sediment. One or two arms will be within the burrow and the remaining arms are exposed. For ventilation, one or two of the arms will undulate within the burrow. ''A.pulchella'' will also reinforce their burrows with a laye ... [...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, about 500 million years ago. 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphiuridae
Amphiuridae (commonly called long-armed burrowing brittle stars or burrowing brittle stars) are a large family of brittle stars of the suborder Gnathophiurina. Some species are used to study echinoderm development (e.g. '' Amphipholis kochii'' and '' Amphioplus abditus'') and bioluminescence (the dwarf brittle star, ''Amphipholis squamata''). Characteristics Amphiuridae are generally small brittlestars. Their jaws are always with two apical papillae at the tip, and one or more papillae on each side. Systematics and phylogeny Amphiuridae are the most diverse family of Ophiurida with over 200 species. The family contains the following genera: In addition, two extinct genera are known: * † '' Deckersamphiura'' Jagt, 2000 * † '' Xanthamphiura'' Hess 1970 Image:Amphiodia pulchella.jpg, '' Amphiodia pulchella'' Image:Amphioplus thrombodes.jpg, '' Amphioplus thrombodes'' Image:Ophiocentrus aspera.jpg, '' Ophiocentrus aspera'' Image:Amphipholis squamata Réunion.jpg, '' Amphipho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphiodia
''Amphiodia'' is a genus of brittle stars belonging to 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. Some species are used to study echinoderm development (e.g. '' Amphipholis kochii'' an .... Species References''Amphiodia at the World Ophiuroidea Database'' Amphiuridae Ophiuroidea genera Taxa named by Addison Emery Verrill {{ophiuroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
