Figure 11. A) The calcareous alga Mizzia velebitana Schubert, 1908 from the Middle Permian of Velebit Mountain, Croatia, Kochansky-Devidé collection, inv.no. 41; B) model of a Mizzia-like alga [101]; C–D) the calcareous alga Diplopora annulata (Schafhäutl, 1853): C) cross section and D) reconstruction (from [102]).
