Plate 6 



Page 

 Figs. 1, 2. Actinopora steUata Koch and Duiiker, 1837 57 



1. Young Ijcrenicoid zoaria, >(6. 



2. Entire ovicelled zoarium, X6. (After sketch by Wa- 



ters.) 

 Lower Cretaceous (Valaiigian) : Sainte-Croix, Switzer- 

 land. 



Fig. 3. Mesenteripora marginata D'Orbigny, 1853 48 



Fragment, X12. 



Cretaceous (Vahmgian) : Sainte-Croix, Switzerhmd. 



Figs. 4-8. MuUituhigera campicheana D'Orbigny, 1853 58 



4. Two zoaria, natural size. 

 5, 6, 7. Base, side and upper surface, X2, of same zoarium. 

 8. Portion of the zoarium, X12, showing the ovicell. 



Lower Cretaceous (Valangian) : Sainte-Croix, Switzer- 

 land. 



Fig. 9. M idtifascigera campicheana D'Orbigny, 1853 60 



Zoarium, X6, formed (on the right) by two discoidal sub- 

 colonies in the Actinopora stage and (on the left) by a sub- 

 colony in the Lopholepis growth form. 

 Lower Cretaceous (Valangian) : Sainte-Croix, Switzerland. 



Fig. 10. Radiofascigera rarnosa D'Orbigny, 1853 60 



Ovicelled specimen, X12, with irregular subcolonies. 

 Lower Cretaceous (Valangian) : Sainte-Croix, Switzerland. 



99 



