254 DESCRIPTION OF VERTEBRATE REMAINS, CHIEFLY 



The collection contains many other teeth of the same species, together with 

 teeth of Carcharodon megalodon and other Sharks, and a well-preserved dental 

 pavement of Mjjliobates mordax. 



With these there were also vertebrse of Sharks ; among them one of a Carcha- 

 rodon 3^ inches broad and 1^^ inches long ; another measured ^ inches broad 



and If inches long. 



The collection further contains vertebra, teeth and ear bones of Cetaceans, 

 and teeth of Elephant, Mastodon, Horse, and a Deer, all obtained from the Bulow 

 tract. 



Carcharodon lanciformis. Moderately frequent. 

 NoTiDANTJS pRiMiGENius. Seldom. 

 Hemipristis serra. Abundant. 

 Galeocerdo aduncus. Moderately frequent. 

 Galeocerdo contortus. Abundant. 

 Prionodon antiquus, Agassiz. 



Galeocerdo mmo?', Gibbes. Abundant. 

 Lamna elegans. Frequent. 

 OxYRHiNA HASTALis. Moderately abundant. 

 OxYRHiNA xiPHODON. Moderately abundant. 



Spiiyr^na major. 

 Leidy: Proceedings Academy Natural Sciences, 1855, 39Y. 



Isolated teeth of a large species of SphyrcBna are frequent among the fossils of 

 the Ashley phosphate beds. Tlie first specimens brought to my notice were 

 obtained by the late Capt. Bowman from the sands of Ashley River. All that I 

 have examined, perhaps amounting to several hundred, have been shed teeth, or 

 such as had not had the root developed. 



Fi«-ures 37, 38, Plate xxxiv., represent teeth of the ordinary form. These 

 appear to be somewhat broader in proportion to their length than in the great 

 Barracuda Pike. They are flattened conical, with trenchant borders and sharp 

 point. The borders and point are defined from the body of the tooth by a delicate 

 line, and the edges when unworn are minutely crenulate. The lustrous enamel- 

 like' dentinal investment of the teeth is regularly and minutely striate in the 

 length; in some specimens the strise becoming more distinct towards the base. 



PicTure 39 represents a tooth of similar form to those just described, but pre- 

 senting a coarsely striated appearance towards the base. 



Ficxures 40, 41, represent teeth like those arming the anterior extremity of the 

 mandibles and intermaxillaries in the Barracuda Pike. These are compressed 



