Ophiuroidae
Ophiuroidae (brittle-stars; subphylum Asterozoa, class Stelleroidea) A subclass of brittle-stars in which a central, rounded disc is sharply demarcated from the long, slender arms. The body cavity of the arms is filled almost completely with axial skeleton. The subclass is known from the Ordovician to the present.
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Brittlestar , brittle-stars See EURYHALINA; OPHIOMYXINA; OPHIURIDA; OPHIURIDEA; PHRYNOPHIURIDA.
brit·tle·star / ˈbritlˌstär/ • n. an echinoderm (Ophiura and other… Feather Stars , Feather stars, or comatulids, are echinoderms that belong to the class Crinoidea (phylum Echinodermata), which they share with the sea lilies. Unlike… Arm , arm1 / ärm/ • n. 1. each of the two upper limbs of the human body from the shoulder to the hand. ∎ (in technical use) each of these upper limbs from… musculo-skeletal system , arms serve as our primary connection to people and objects, through our reach and our ability to grasp things: through defensive postures, arms can a… Star Anise , Star anise Galaxy , Galaxy
A galaxy is a large collection of stars, glowing nebulae (clouds), gas, and dust bound together by gravity. Many scientists now believe that a…
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Ophiuroidae