Phyllodocida is an order of polychaete worms in the subclass Aciculata. These worms are mostly marine though some are found in brackish water. Most are active benthic creatures, moving over the surface or burrowing in sediments, or living in cracks and crevices in bedrock. A few construct tubes in which they live and some are pelagic, swimming thr...
Found on
http://en.wikipedia.org/wiki/Phyllodocida
(from the article `annelid`) ...pharynx retractable; dorsal surface with membranous ridges; ventral setae strongly curved; found on sponges; small; single genus, Spinther.Order ...
Found on
http://www.britannica.com/eb/a-z/p/62
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