Brief Summary
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Phyllodocida is an order of polychaete worms which contains an estimated 3500+ species. Adults range in size from several millimeters to more than a meter. Morphological studies cite strong support for a monophyletic grouping of the Phyllodocida, based on several characters (anterior enlarged cirri; an axial muscular proboscis (eversible pharynx); ventral position of sensory palps; compound chaetae with a single ligament; lack of dorsolateral folds; see Rouse and Fauchald, 1997).
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