222 



NORTH-CAROLINA GEOLOGICAL SURVEY. 



BO to resist the entrance of a musket ball. The same remarks 



it regards ownership 



as 



FiG. 40. 



have already been made, 

 respecting other bones of 

 this class, so common in 

 these deposits. That there 

 were two, at least, power- 

 ful reptiles, is evident from 

 their bones and teeth, but 

 in no instance have two 

 been found attached, and 

 in such relations that it 

 |would be safe to affirm that 

 they belonged to the same individual. 



FIGS. 41 & 42. 



EL LIPTONODON COMPRESS US . EMMON 8 . 



Tootli curved, robust, sub-conical and 

 pointed ; crown circular at base, becom- 

 ing elliptical, and finally sub-elliptical, or 

 with the inside more flattened or less 

 convex than the other ; bicarinate ; the 

 anterior ridge becoming obsolete near 

 the base of the crown, and without ser- 

 ratures or rugosities ; enamel rather tine- 



O ' 



ly wrinkled longitudinally, or faintly ru- 

 gose, and none of the rugosities extend to 

 the apex; dentine is concentric; pulp 

 cavity open, conical, carinate. Figures 

 natural size. Figure 42, transverse sec- 

 tion. 



This tooth is broken at the base of the 

 crown, and has lost a small part of its 

 apex. 



It differs very clearly from the Polyp- 

 tychodon, Pliogonodon, Mossosaurus or 

 Fleiosaurus. The clear and distinct marks of difference aiv 

 shown in the figures of each referred to except the Pleiosau- 

 rus. This tooth was found in the miocene near the Cape 



