NOKTH-CAEOLINA GEOLOGICAL SURVEY. 



211 



OBTOTEBOOETU8 CORNUTIDENS. LEIDY. 



FIG. 33. 



The genus Oryeterooetua was 



originally proposed on the frag 

 ment of a jaw, and several teeth 

 from the miocene deposit of Vir 

 ginia. In my collection I have 

 a tooth like those just mentioned, 

 except that it is not quadrate, 

 which it is suspected, however, to 

 be an unimportant character. 

 The specimen was discovered in 

 the miocene deposit of North-Car 

 olina. It is remarkable for its re 

 semblance in form to a small ox- 

 horn, being elongated, conical 

 and curved. The base is excava 

 ted as in the teeth of the sperma 

 ceti whale, to which the extinct 

 cetacean was probably allied. In 

 structure, the tooth appears to be 

 wholly composed of dentine. The 

 length of the specimen in the 

 curve is 4% inches, but it appears 

 when entire, to have been half an 

 inch longer. The section of the 

 base is oval, and is 1-i lines in one 

 diameter and 12 lines in the 

 other. 



