PLATE XV. 



PAGE 



Figs. 1-4. Otodus obliquus Agassiz 106 



la. Inner face of an anterior tootli belonging- to an immature indi- 

 vidual, and corresponding in size to the lateral tooth shown in 

 Fig. 5. Liverpool Point. 



lb. Lateral aspect of same specimen. 



Ic. Outer face of same specimen. 



2a. Inner face of a lateral tooth belonging to an immature individual. 

 Liverpool Point. 



2b. Lateral aspect of same specimen. 



2c. Outer face of same siJecimen. 



3a. Outer face of a lateral tooth, with a well-develoj)ed j)air of lateral 

 denticles. Aquia Creek. 



3b. Lateral aspect of same specimen. 



3c. Inner face of same specimen. 



4a. Inner face of an unusually large and massive tooth with erect 

 crown, entire edges and large lateral denticles, showing- transi- 

 tional characters between CarcJiarodon and Lamna. Glymont. 



4b. Lateral aspect of same specimen. 



4c. Outer face of same specimen. 



267 



