﻿THE OOLITIC ECHINODERMATA. 



421 



MIDDLE DIVISION. 



Forest 

 Marble. 



Kelloway 

 Rock. 



Oiford 

 Clav. 



Lower 

 Calc. Grit 



Coralline 

 Oolite. 



Upper 

 Calc. Grit. 



UPPER DIVISION. 



Kimme- 

 ridge Clay. 



Portland 

 Sand. 



Portland 

 Oolite. 



Purbecic 

 Beds. 



Observations and Foreign 

 Localities. 



France. 



France and Germany. 



Boulogne-sur-Mer. 



France. 



France. 



France and Switzerland. 



Switzerland. 



France and Switzerland. 



France and Germany. 



