Figure 16. A-C in Brood chambers constructed from spines in fossil and Recent cheilostome bryozoans

Figure 16. A-C, Macropora levinseni Brown, Recent, New Zealand, NIWA. A, partly bleached ovicell, viewed laterally. B, interior of brooding cavity, showing bases of ooecial costae overgrown by cryptocyst; gymnocystal ovicell floor is below. C, ovicell upside down, showing the pores in its floor. D-F, Macropora polymorpha (Philipps). Recent, New Zealand, NIWA. D, developing ovicell, showing gymnocystal floor and intercostal spaces with cryptocystal fabric. E, upside-down ovicell, showing the kenozooidal supporting zooid (top) and peripheral pores in the ovicell floor. F, part of the developing ovicell, showing costal coelomic lumina connected with lacunae in the cryptocystal matrix. Scale bars: A, D = 500 Mm; B, F = 100 Mm; C, E = 200 Mm.