AND ITS FOSSILS. 



Tiff. 3SS. 



315 



Fig. 389. 



Terebratula fimbria. Bhynclionella spinosa. a. Pholadomyafidicula. £ nat. size. Inf. Ool. 

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



same. 



Fist. 300. 



Fig. 891. 



Fig. 302. 



Ple.urotom.aria granulata. 



Ferruginous Oolite, Normandy. 



Inferior Oolite, England. 



Pleurotomaria ornata, Sow. Sp. 

 Inferior Oolite. 



Dysaster ringens. 

 Inf. Ool. Somersetshire. 



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

 mouth. The Dysaster ringens (fig. 392) is an Echinoderm common to 

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

 which representations are here given (figs. 393, 394, 395). 



Fig. 393. 



Ammonites numphresianus. 

 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. costata, 

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

 (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. 



