Figure 4 in The first catenicellid (Bryozoa, Ascophora) from Mediterranean shallow waters: a hidden resident or a new immigrant?

Figure 4. Catenicella paradoxa sp. nov. Paratypes (PMC B 17b 5 July 2006). Features of bizooidal fertile segments. (A, B) Frontal and lateral views of a disarticulated fertile segment. Note the swelling in the frontodorsal direction, the sinuous outline of the ovicell in lateral view, the extension of its frontal fenestra and the pit sculpture, the lateral displacement of proximolateral pore chambers and their curving shape to follow the ovicell contour. Scale bars 200 µm. (C) Oblique view of the ovicell, showing its flat frontal surface. Scale bar 200 µm. (D) A single ovicell pit with well-defined outlines, seemingly resulting from the dissolution of an extremely thin layer of surface mineralization. Scale bar 5 µm.