ophiuroids — n.; n. pl. [Gr. ophis, serpent; oura, tail; eidos, form] A Class of Echinodermata, with narrow, gradually tapered arms, sharply offset from the central disk, generally 6 or 7 radiate; also called brittle stars, basket stars and snake stars … Dictionary of invertebrate zoology
echinoderm — /i kuy neuh derrm , ek euh neuh /, n. any marine animal of the invertebrate phylum Echinodermata, having a radiating arrangement of parts and a body wall stiffened by calcareous pieces that may protrude as spines and including the starfishes, sea … Universalium
Brittle star — Temporal range: 488.2–0 Ma … Wikipedia
Stelleroidea — Taxobox name = Stelleroidea image width = 250px image caption = Ochre Sea Star on beach at Olympic National Park regnum = Animalia phylum = Echinoderm superclassis = Stelleroidea subdivision ranks = Classes subdivision = Asteroidea Ophiuroidea… … Wikipedia
Gorgonocephalidae — Scientific classification Kingdom: Animalia Phylum … Wikipedia
five-finger — Starfish Star fish ( f[i^]sh ), n. 1. (Zo[ o]l.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star shaped and usually has five rays, though the number of rays varies from five to forty or… … The Collaborative International Dictionary of English
sea star — Starfish Star fish ( f[i^]sh ), n. 1. (Zo[ o]l.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star shaped and usually has five rays, though the number of rays varies from five to forty or… … The Collaborative International Dictionary of English
Starfish — Star fish ( f[i^]sh ), n. 1. (Zo[ o]l.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star shaped and usually has five rays, though the number of rays varies from five to forty or more. The… … The Collaborative International Dictionary of English
stellerid — Starfish Star fish ( f[i^]sh ), n. 1. (Zo[ o]l.) Any one of numerous species of echinoderms belonging to the class Asterioidea, in which the body is star shaped and usually has five rays, though the number of rays varies from five to forty or… … The Collaborative International Dictionary of English
Ordovician — Period 488.3–443.7 million years ago … Wikipedia