i 



ELASMOBRANCHII. 57 



Otodus levis Gibbes. 



Otodus levis Gibbes, Journ. Acad. Nat. Sci. Phila., (2) I, August, 1849, p. 

 199, PI. 26, fig. 141 (type). (New Jersey.) 



Known only from the record of Gibbes from within the limits 

 of the State. He says : "I have since seen one in the cabinet of 

 the Academy from New Jersey." I cannot find that his figures 



Fig. 22. — Otodus levis Gibbes. (From Gibbes.) 



differ from those I give as Otodus appendiculatas, except that he 

 shows the crown deflected and more elongate. 



Formation and locality. . This species has been ascribed to the 

 Eocene, but no special locality within the State has been given 

 by Gibbes. It was originally obtained in the same formation of 

 South Carolina. 



Otodus lanceolatus (Morton). 



Squalus sp. Morton, Synop. Org. Rem. Cret. U. S., 1834, p. 31, PI. 11, fig. 5. 



New Jersey. 

 Lamna lanceolata (Agassiz) Morton, Am. Journ. Sci. Art., 1835, p. 277 (name 



only, based on preceding). 

 Squalus sp. Morton, Synop. Org. Rem. Cret. U. S., 1834, p. 31, PI. 11, fig. 1. 



Arenaceous beds of New Jersey. 

 Lamna obliqua (Agassiz) Morton, Journ. Acad. Nat. Sci. Phila., VIII, 1842, 



p. 15 (name only, based on preceding). 

 Otodus obliquus Gibbes, Journ. Acad. Nat. Sci. Phila., (2) I, August, 1849, 

 p. 199. figs. 131-137. (New Jersey Eocene casts.) 



Leidy, Journ. Acad. Nat. Sci. Phila., (2) VIII, 1877, p. 236. (Vin- 

 centown.) > 



Teeth robust, usually elongated as an isoceles triangle, and 

 rather thick. Coronal surface but slightly compressed, attenuated, 



