Plate 23 



Page 

 Figs. 1-4. Ceriopora nuwm ularia, new species 26 



1. Zoarium, natural size. 

 2, 3. Fragment of the zoarial surface, X12 and X25. 



4. Base of a zoarium, X 12, showing the arrangement of 



the tubes around the ancestruhi. 

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

 land. 

 Figs. 5-7. Ceriopora parvipora, new sjiecies 25 



5. Zoarium, natural size. 



6, 7. Part of the zoarial surface, showing the small oral tul^er- 

 osities, X12 and X25. 

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

 land. 



Figs. 8-10. Ceriopora fallax, new species 28 



8. Two zoaria, natural size. 

 9, 10. Fragment of the superior part of the zoarium, show- 

 ing the large and small aperture, X12 and X25. 

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

 land. 



Figs. 1 1-17. Ceriopora lohifera, new species 27 



11, 12. Specimens with short and irregular lobes, nat- 

 ural size. 

 13, 14. Zoarium, natural size, and base of same, X12. 

 15, 16. Zoarial surface, X12 and X25. 



17. Portion of the sectioned zoarium showing the 

 mammillosities of the surface, X6. 

 Lower Cretaceous (Valangian) : Sainte-Croix, 

 Switzerland. 

 116 



