FIGURE 23 in Scanning electron microscopy study of Lars Silén's cheilostome bryozoan type specimens in the historical collections of natural history museums in Sweden

FIGURE 23. Caulibugula bocki Silén, 1941. A. Holotype UPSZTY 2461, Bonin Islands, Japan. A. Stem of strongly calcified kenozooids and chitinous tubes. B–F. Paratype UPSZTY 191151, Bonin Islands, Japan. B. Branch bifurcation. C. Close-up of zooids at bifurcation. D. Close-up of autozooids along the branch. E. Branch with a partially preserved tubular autozooid. F. Close-up of the tubular autozooid in (E). Scale bars: A, C = 300 µm; B = 500 µm; D, E = 200 µm; F = 100 µm.