Aplacophora
無板綱
Ap·la·coph·o·ra n. pl. Zool. A division of Amphineura in which the body is naked or covered with slender spines or setæ, but is without shelly plates.
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Aplacophora
n : an order of Amphineura [syn: Solenogastres, order
Solenogastres, order Aplacophora]