Plate 31 



Page 

 Fig. 1. Zonopora coinprcssa, new species 90 



Portion of transverse section, X25. 



Lower Cretaceous (Aptian) : Faringdon, England. 



Figs. 2-4. Zonopoi-a arbor ea Koch and Dunker, 18.37 90 



2. Transverse section, X2.5. 

 3, 4. Tangential section, X12 and X2.5. 



Lower Cretaceous (Neocomian) : Berklingen, Germany. 

 Figs. 5, 6. NcuroporeUa hemispherica, new species 34 



5. Meridian section, X25, showing the internal structure. 



6. Tangential section, X60, exhibiting the microscopic wall 



structure. 

 Lower Cretaceous (Aptian) : Faringdon, England. 



Figs. 7, 8. Ctriopora dimorphocclla, new species 29 



Tangential section, X12 and X25, illustrating the wall 



structure. 

 Lower Cretaceous (Aptian): Faringdon, England. 



Fig. 9. Clausa zonifera, new species 80 



Tangential thin section, X25. 



Lower Cretaceous (Aptian): Faringdon, England. 

 124 



O 



