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parapodia


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1 In Polychaeta, usually biramous, muscular, lateral projections of the body, paired and extending from the body segments, more or less compressed laterally, and bearing setae; in free-swimming forms they are used for locomotion, and in sessile forms to fan water.

2 In opisthobranch Mollusca, lateral projections from the side of the foot which form fins used in swimming.

Subjects: Zoology and Animal Sciences.


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