NOKTH-CAROLINA GEOLOGICAL SURVEY. 



239 



FIG. 69. 



G. LATIDENS. (Fig. 69.) 



Differs from the preceding in its pro- 

 portional length of base, being considera- 

 bly greater. 



The crown is low, and the enamel ex- 

 tends lower upon the outer face ; the sen- 

 atures subequal ; apex pointed. 



It is much more common than the G. 



pristodontus. 



GENUS LAMNA. 



Teeth rather flat, narrow and elongated ; smooth, and 

 usually furnished with appendages at base. 



LAMNA ELEGANS. AGASS. (FigS. 70, 71 & 71 A.) 



Tooth narrow, lanceolate ; inner face quite convex, outer 

 rather flat and smooth ; the former regularly striate at base. 



FIG. 70. 



FIG. 71 A. 



FIG. 71. 



but towards the middle the striae degenerate into wrinkles ; 

 the outer ones are short, and but reach the edge of the tooth at 

 base. The L. elegans is very common in the miocene beds of 

 North-Garoltna. Fig. 71 A, side view. 



L. (ODONTASPIS) CONTOETIDENS. 



Specimens which answer to the figures of this species, given 

 by Prof. Gibbs, especially in the irregular form and absence 



