FIGURE 20 in Systematics of interstitial encrusting bryozoans from southeastern Brazil

FIGURE 20. Bryopesanser tilbrooki sp. nov.: A, colony on sand grain. B, several autozooids in a hollow of a grain. C, three zooids showing long hollow spines at lateral to distal edges of orifice. D, ovicelled zooid, showing smooth imperforate calcification and raised proximal margin. E, an orifice with seven spines; one of the paired avicularia can be seen at right of the orifice. F, another zooid, showing spines and avicularia. Scale bars: A–C, 0.2 mm; D, F, 0.1 mm; E, 0.05 mm.