FOSSILS OF INFERIOR OOLITE. 
351 
Fig. 354. 
Pleurotomaria granulata, Sow. 
Ferruginous Ool., Normandy. 
Inferior Oolite, England. 
Fig. 355. 
Pleurotomaria ornata^ 
Sow. Sp. Inferior 
Oolite. 
Fig. 356. 
Collyrites (Dysaster) rin- 
gens, Agass. Inf. Ool., 
Somersetshire. 
lyrites (Dysaster) ringens (Fig. 356) is an Echinoderm com¬ 
mon to the Inferior Oolite of England and France, as are the 
two Ammonites (Figs. 357, 358). 
Fig. 35T. 
Ammonites Humphresianus, Sow. Inferior Oolite. 
Fig. 358. 
Ammonites Braikenridgii, Sow. 
Oolite, Scarborough. Inf. 
Ool.,Dundry; Calvados; etc. 
Fig. 359. 
Ostrea Marshii. One-half natural size. 
Middle and Lower Oolite. 
^ Palaeontological Relations of the Oolitic Strata. —Observa¬ 
tions have already been made, p. 338, on the distinctness of 
the organic remains of the Oolitic and Cretaceous strata, and 
