CERAS
(pl. CERATA) |
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On of the slender, club-shaped or horn-shaped dorsal appendages in the NUDIBRANCHIA and ASCOGLOSSA, which either lie separately or in several rows or may be clustered together in tufts and palmate bunched; they contain blood from the HAEMOCOEL and are invaded also by tubular branches of the digestive gland which, as evolution proceeds, becomes deployed on On of the slender, club-shaped or horn-shaped dorsal appendages in the Nudibranchia and Ascoglossa, which either lie separately or in several rows or may be clustered together in tufts and palmate bunched; they contain blood from the haemocoel and are invaded also by tubular branches of the digestive gland which, as evolution proceeds, becomes deployed on the dorsal surface; see also: CLADOHEPATIC; HOLOHEPATIC. See illustration: Composite Nudibranch.
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