FIG. 21. — A-D, L, Cassideus biannulatus n in Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany)

FIG. 21. — A-D, L, Cassideus biannulatus n. sp.; A, B, holotype, left lateral and basal views; C, D, L, paratypes; C, right lateral view; D, latero-apical view; L, basal view of initial spicule showing the absence of dorsal spine; E, F, Cassideus deweveri n. sp.; E, holotype, left lateral view; F, paratype, right lateral view; G-I, Cassideus scalariconus n. sp.; G, H, holotype, right lateral and basal views; I, paratype, left lateral view; J, K, Cuniculiformis sp., fragment, basal and left lateral views. Scale bars: A-K, 30 µm; L, 10 µm.