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absent Actinoptilum molle adjacent arranged Atlantic autozooids axis base calyces calyx Cavernularia clavate cluster coast collected Colour considered conspicuous D'Hondt depth described Description Diagnosis distal distinct distinguished Distribution Fig dredge Durban echinatum Echinoptilum elegans elongate ends Entire colony extends Family figures four genera genus Grasshoff Gray groups Herklots Hickson included Indian Ocean interior J. A. Thomson known Kölliker Kophobelemnon Kükenthal & Broch Kükenthal 1915 leaf length listed longitudinal margin Material minute mm in length Museum Namibia Natal numerous ovals pairs peduncle Pennatula pennatulaceans plates polyp leaves portion possess present proximal Pteroeides rachis range rays recorded references region Remarks represents rods rounded rows Scale sclerites separated showing side single Siphonozooids South Africa southern Africa specimens surface tentacles terminal teeth three-flanged spindles Tixier-Durivault Transkei trawl type locality Type species Umbellula usually Verrill Virgularia whorl width