Lepadidae (goose barnacles; order Thoracica, suborder Lepadomorpha) One of seven families of so-called goose barnacles, in which the capitulum has five plates, though some of these may be missing or reduced. There are no articulated caudal appendages, and all known species are hermaphroditic. Anelasma has no capitular plates and is entirely parasitic; it sends root-like growths into the tissues of its dogfish hosts.
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