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is on the oral surface. Digestive glands are confined to central disc. The integument is leathery, bearing calcareous granules or platelets. They generally live in deep-sea waters, coiling their arms on branched black coral.
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for gas exchange and excretion. Their ventral arm shields are rudimentary, and dorsal shields usually absent. Arms sometimes are branched, and can coil vertically. The vertebrae are joined by hourglass-shaped surfaces. The
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Pearse,V.B. et al.,(1998) An accessible population of
Ophiocanops off NE Sulawesi,Indonesia. In: Mooi, R. & Telford, M. (Eds.) Echinoderms: San Francisco. Balkema, Rotterdam, pp. 413–418
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One remaining family, the
Ophiomyxidae, differs in having a soft, unprotected integument, like that of Ophiocanops, but lacks the peculiar features of the gut and gonads in oegophiurids.
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The
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The inclusion of
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R.C. Brusca, G.J. Brusca. Invertebrates. Sinauer
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Phrynophiurida are divided into the following suborders and families:
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