FIGURE 15 in Revision of the genus Setosella (Bryozoa: Cheilostomata) with description of new species from deep-waters and submarine caves of the Mediterranean Sea

FIGURE 15. Setosella spiralis Silén, 1942. Holotype: SMNH-Type-1893, North Atlantic Ocean, Josephine bank, 36°45,5'N, 14°12,2'W, 500–650 m. a. General appearance of the colony. b. Periancestrular area showing the ancestrula with two associated vibracula and the reversally budded first zooid. c. Close-up of the ancestrula with a granular closure plate. d. Periancestrular zooids and vibracula. e. Close-up of a peripheral zooid with extensively exposed distal gymnocyst. f. Vibraculum showing evidence of intramural budding. Scale bars: a = 500 μm; b, d, e = 200 μm; c = 100 μm; f = 50 μm.