AND ITS FOSSILS. 



Fig. 



Fisr. 389. 



315 



Terebratula fimbria. RhyncTionella spinom. a, PJioladomyafidicula. ^ nat. size. Inf. Ool. 

 Inferior Oolite. Inferior Oolite. &. Heart-shaped anterior termination of the 



same. 



Fig. 890. 



Fig. 891. 



Pleurotomaria granulata. 



Ferruginous Oolite. Normandy. 



Inferior Oolite, England. 



Pleurotomaria ornata, So"5v. Sp. 

 Inferior Oolite. 



Fig. 392. 



Dysaster ring en f,. 

 Inf. Ool. Somersetshire. 



marked by a deep cleft (a, %, 390, and fig. 391) on the right side of the 

 mouth. The Dysaster ringens (fig. 392) is an Echinodei'm common to 

 the Inferior Oohte of England and France, as are the three Ammonites of 



which representations are here given (figs. 



395). 



Fig. 393. 



Ammonites HumpJiresianus. 

 Inferior Oolite. 



As illustrations of shells having a great vertical range, I may allude to 

 Trigonia clavellata, found in the Upper and Inferior Oolite, and T. cosiata, 

 common to the Upper, Middle, and Lower Oolite ; also Ostrea Marshii 

 (fig. 396), common to the Cornbrash of Wilts and the Inferior Oolite of 

 Yorkshire; and Ammonites striatulus (fig. 397) common to the Inferior 

 Oolite and Lias. 



