Fig. 6 in Erect bifoliate species of Microporella (Bryozoa, Cheilostomata), fossil and modern

Fig. 6. Microporella hyadesi (Jullien, 1888), Recent, Discovery Expedition. A–D. NHMUK 1990.10.22.14. A. General view of a branch fragment. B. Group of zooids, one ovicellate, at the growing edge of the branch. Note the growing edge intermediate between a smooth and a stepped edge. C. Closeup of the orifice, ascopore and adVentitious aVicularia. Note also the borehole patched by an aVicularium (top centre). D. Group of zooids showing seVeral repared boreholes and sealed orifices. E–F. NHMUK 1990.10.10.25. E. Aberrant autozooid with smooth, non-pseudoporous frontal shield. F. Close-up of three ovicellate zooids, the ovicell on the left showing teratology. G. NHMUK 1990.10.31.12, autozooids with adventitious avicularia preserving triangular mandibles. Scale bars: A–B = 1 mm; C, E–G = 200 µm; D = 400 µm.