PLATE 3 



Fig. i. Hystrichosphaera ramosa var. ramosa nov. Upper Oxfordian, Throstler Clay. 

 V.5i7i4(i). X500. 



Fig. 2. Prolixosphaeridium deirense gen. et sp. nov. Holotype, ¥.51727(2). X500. 



Fig. 3. Tanyosphaeridium regulate sp. nov. Holotype, V. 51755(1). X500. 



Fig. 4. Cordosphaeridiosum cracenospinosum sp. nov. Holotype, V. 51748(1). X200. 



Fig. 5. Perisseiasphaeridium pannosum gen. et sp. nov. London Clay; Enborne boring 

 (at 43-25 feet depth). E.n/71/9. X525. 



Fig. 6. Cordosphaeridium multispinosum sp. nov. Holotype, V.5i75i(i). X500. 



Fig. 7. Achomosphaera neptuni (Eisenack). V.5i7i6(i). X500. 



Fig. 8. Cordosphaeridium gracilis (Eisenack). V.5i746(i). X312. 



Fig. 9. Cordosphaeridium inodes (Klumpp). V.5i745(i). Apical view. X500. 



