Phrynophiurida


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Phrynophiurida

[‚frī·nə′fyu̇r·ə·də]
(invertebrate zoology)
An order of the Ophiuroidea in which the vertebrae usually articulate by means of hourglass-shaped surfaces, and the arms are able to coil upward or downward in the vertical plane.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.