Fig. 11 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California

Fig. 11. Microporella umboniformis Soule, Soule & Chaney, 1995, holotype (SBMNH 671678) (previously AHF 213), Velero BS 1064, off Santa Barbara Island (33°30′1.00008″ N, 119°2′20.00004″ W), depth 49 m, California, USA. A. Group of zooids showing single or paired adventitious avicularia and five to six oral spines. Note the consistent absence of umbones lateral to orifice. B. Close-up of a zooid at colony margin showing six robust spines, paired avicularia and a short, pointed umbo proximal to ascopore. C. Close-up of orifice showing two small condyles at some distance from corners and proximal margin slightly concave between condyles as in M. umbonata. D. Close-up of C-shaped ascopore with denticulations. E. Group of zooids with some at the bottom showing larger pseudopores, likely due to the absence of the external layer of calcification, and some others with extensive secondary calcification. F. Close-up of one of the zooids in (E) showing larger pseudopores likely due to the lack of external frontal calcification. G–H. Close-ups of the same ovicell in frontal and lateral view, respectively. Note that the two proximalmost spines are retained. Scale bars: A = 500 µm; B–C = 200 µm; D = 50 µm; E = 1 mm; F–H = 250 µm.