] J ordan-Beal: Supplementary Notes on Fossil Sharks 249 



Family CARCHARIIDAE 



( Odontaspididae ) 

 Genus Carcharias Rafinesque 

 (Odontaspis Agassiz, not Carcharias Cuvier) 



10. Carcharias clavatus (Agassiz). 



(Lamna clavata Agassiz : Jordan) 

 Ocoya Creek, Miocene of Kern County. 



This is not evidently different from Odontaspis cuspidatus 

 {Lamna cuspidata Agassiz) of the Miocene and Oligocene of 

 Europe as Agassiz has indicated and as Leriche again points out. 



The teeth of Lamna and of Carcharias are very similar. 

 Leriche observes (translated) "As I shall show in a later memoir 

 ("Poissons Oligocenes de la Belgique") this species was provided 

 with symphyseal teeth and should therefore be referred to the 

 genus Odontaspsis." 



11. Carcharias morricei Jordan and Beal, new species. 



(Text fig. c) 



To the genus Carcharias we refer with some doubt, four well 

 preserved teeth differing in size and form but apparently belong- 

 ing to the same species. They are from the Miocene of Kern 

 County. They owe their dissimilarity probably to their being 

 from different parts of the mouth. Two of the teeth are bent 

 sharply back at the root and taper from an almost round cross- 

 section to the point. The root is very thick and broad and is 

 almost as wide as the tooth is high. On the sharply curved 

 margin of the tooth, a large basal denticle protrudes from the 

 root. 



Another tooth, probably belonging to the same species, but 

 from a different part of the mouth, is about one-half again as 

 high as the preceding ones, the base is sub-triangular and does 

 not bear as great a relative width to the height of the tooth as 

 in the preceding case. The crown is rather convex in cross-sec- 

 tion, is notched anteriorly and bears two sharp, rather large 

 denticles on the posterior margin. This tooth may be taken as 

 the type of the species which is named for Mr. Charles Morrice. 



