Plate IS 



Page 

 Fig. 1. Reptoclausa denticulaia, new species 82 



The encrusting zoarium, X6. 



Lower Cretaceous (Aptian) : Faringdon, England. 

 Figs. 2-.5. Reptoclaut<a hagenowi Sharpe, 1S54 82 



2. An encrusting zoarium, X6. 



3. Lateral view of a fascicle, XV2. 



4. Longitudinal section, X25, showing the thickness of 



the crest and the oblique arrangement of the tubes. 



5. Transverse section of a branch, X25. 



Lower Cretaceous (Aptian): Faringdon, England. 

 Figs. 6-8. Reptoclausa nieandrina DeLoriol, LS68 82 



6. 7. Portions of the same zoarium, X6, on opposite sides 



of a sliell. 

 8. Branches of a zoarium, X12. 



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

 zerland. 



Ill 



