Figure 6 in A new bryozoan genus from the Sea of Okhotsk and the taxonomy and geological history of 'stratocormidial' cyclostome bryozoans

Figure 6. Fossil cyclostome bryozoans with stratocormidial colonies. (A) Blumenbachium globosum Koenig, 1825, sectioned lectotype colony; NHMUK PI D52755, Pliocene, Coralline Crag Formation, Suffolk, UK. (B) Blumenbachium globosum, colony exterior surface showing ridges bounding subcolonies; NHMUK PI D51069, Pliocene, Coralline Crag Formation, Suffolk, UK. (C) Cellulipora ornata d'Orbigny, 1849, polygonal subcolonies on colony surface; NHMUK PI 25327, Cretaceous, Cenomanian, Le Havre, Seine Maritime, France. (D) Centronea americana Canu and Bassler, 1920, surface of colony; NHMUK PI BZ8914, Eocene, Castle Hayne Limestone Formation, Rocky Point Quarry, Pender County, North Carolina, USA. (E) Centronea americana, Canu and Bassler, 1920, underside of colony showing expanding, exterior-walled subcolonies; NHMUK PI BZ8915, Eocene, Castle Hayne Limestone Formation, Rocky Point Quarry, Pender County, North Carolina, USA. (F) Multifascigera campicheana d'Orbigny, 1853, carrot-shaped colony which evidently grew around a cylindrical substrate; paralectotype, MNHN R615598, Cretaceous, Valanginian, Ste Croix, Switzerland. (G) Semimulticavea marginata (1926), almost spherical colony; NHMUK PI D55117, Cretaceous, Aptian, Faringdon Sponge Gravel, Bowlers Pit, Faringdon, Oxfordshire, UK. (H) Semimulticavea marginata (Canu and Bassler, 1926), broken colony showing layered internal structure; NHMUK PI D55371, Cretaceous, Aptian, Faringdon Sponge Gravel, Little Coxwell Pit, Faringdon, Oxfordshire, UK. (I, J) Multifascigera debenensis Balson and Taylor, 1982; holotype, NHMUK PI D52760, Pliocene, Coralline Crag Formation, Ramsholt Cliff, Suffolk, UK; (I) surface detail of a large colony showing fascicles of autozooids; (J) broken edge of the same colony revealing layered internal structure and columnar fascicles. (K) Reptomulticava pyriformis d'Orbigny, 1854, colony surface showing layers of concentric growth from two subcolonies; syntype, MNHN F.R61575, Cretaceous, Aptian, Ste Croix, Switzerland. Scale bars: (A–J) = 1 cm; (K) = 1 mm.