Fig. 12 in Rhagasostoma (Bryozoa) from the Late Cretaceous of Eurasia: taxonomic revision, stratigraphy and palaeobiogeography

Fig. 12. Rhagasostoma gibbosum (Marsson, 1887). A–F. Early Maastrichtian, Saturn quarry near Kronsmoor, Schleswig-Holstein, Germany. A–E. SMF 29906. A. Overview of erect bifoliate colony. B. Ovicellate and non-ovicellate autozooids and avicularia. C. Autozooid, avicularium with wedge-like structure and kenozooid. D. Ovicellate autozooids and avicularia with wedge-like structure. E.Avicularium with broken wedge-like structure. F. SMF 29907, autozooids and avicularia. G. SM B36679, Upper Chalk, early Maastrichtian, Ostrea lunata Zone, Trimingham, Norfolk, England, UK. Ovicellate and non-ovicellate autozooids, some with gymnocyst (arrowed), avicularia and kenozooids. Scale bars: A, F = 1 mm; B–D = 300 µm; E = 100 µm; G = 200 µm.