Cheilopora sincera

• Main Author: Martino, Emanuela Di
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Gymnolaemata; Cheilostomatida; Cheiloporinidae; Cheilopora; Cheilopora sincera; Norway; Anvil; Finnmark; North Atlantic; Northern Norway
• Online Access: https://zenodo.org/record/6425473; https://doi.org/10.5281/zenodo.6425473

Cheilopora sincera (Smitt, 1868) (Fig. 8; Table 6) Discopora sincera Smitt, 1868: 28, pl. 27, figs 178–180. Cheilopora sincera: Levinsen 1909: 353, pl. 24, fig. 4a. not Cheilopora sincera: Grischenko et al. 2007: 1125, fig. 31. Material examined. Lectotype (designated here) SMNH-Type-1733, North Atlantic Ocean, Finnmark, northern Norway, encrusting a bivalve shell. Leg. S. Lovén. Description. Colony encrusting, multiserial, uni- to multilaminar, extensive, encrusting a fragment of a bivalve shell on both sides. Autozooids arranged in alternating, longitudinal rows (Fig. 8A), distinct with narrow, shallow grooves and a thin rim of raised calcification, elongate rectangular sometimes acutely tapering proximally, twice as long as wide (mean L/ W 2.12). Frontal shield flat proximally, slightly convex centrally and distally raised as a pointed (Fig. 8A), rounded (Fig. 8B) or anvil-shaped (Fig. 8D) suboral process, nodular and finely granular, densely and evenly perforated by circular or funnel-shaped pseudopores, 20–25 µm in diameter, except for the suboral area and the raising peristome (Fig. 8A–C); marginal areolae distinguishable from pseudopores by being larger and elliptical to drop-shaped, about 80 µm long, placed lateral to the orifice (budding sites for avicularia) and at proximal corners (Fig. 8C). Orifice cormidial, formed by two or more autozooids (e.g. the zooid to which it belongs plus the distal neighbour as seen in Fig. 8C or also the lateral neighbours as in Fig. 8D), bell-shaped, slightly larger in ovicellate zooids; oral spines absent; closure plates, nodular as the frontal shield, observed sealing the orifice (Fig. 8D). Adventitious avicularia rare, single or paired, budded from the latero-oral marginal areolae, elliptical to pearshaped; rostrum slightly raised, rounded, directed laterally, indenting the frontal shield of the lateral neighbours; crossbar lacking; mandible semi-elliptical (Fig. 8B). Ovicells endozooidal, flat to slightly convex, formed by an elongation of the proximal frontal shield ...