TAB. XII. 



Pliosaurus grandis. 



Tooth ; natural size. 



Fig. 



1. Anterior surface, with ridged coronal enamel. 



2. Posterior surface, with ridged coronal enamel, somewhat crushed and 



mutilated. 



3. Convex or unridged side of the crown. 



From the Kimmeridge Clay, at Kimmeridge, Dorsetshire. Presented 

 by the discoverer, J. C. Mansel, Esq., of Whatcombe, Dorsetshire, to 

 the British Museum. 



