ELASMOBRANCHII. 

 G 



CORAX FALCATUS Agassiz'. 



63 



Galeocerdo falcatus Cope, Rep. U. S. Geol. Sun-. Terr. Hayden, II, 1875, 

 p. 295. (Greensand of New Jersey.) 



Teeth moderately broad, greatly compressed, and moderately 

 high. Crown moderately oblique to nearly erect, high, smooth, 

 broad and greatly compressed. Outer coronal surface usually 

 flattened or but slightly convex. Inner coronal surface convex. 

 Apex slightly deflected, broad, compressed. Cutting-edges with 

 feeble serrations, or almost smooth. No basal cusps. Root 

 moderately broad, deep, compressed, inner surface depressed or 

 slightly concave and outer surface moderately convex, not bulg- 

 ing much. Lower margin emarginate. Length 20 mm. 



<£>&& 



Fig. 28. — Corax falcatus Agassiz. 1-4, New Jersey (Kilvington) ; 5, Mon- 

 mouth Co. (Knieskern) ; 6, Mullica Hill (Abbott) ; 7-8, Pemberton (Bryan). 



This is a smaller species than the next, which it closely re- 

 sembles. 



Formation and locality. The following from the Cretaceous, 

 without data as to the beds, seem to belong to this species : "New 

 Jersey" 5 (Kilvington) ; Monmouth County 1 (P. D. Knies- 

 kern) ; Pemberton in Burlington County 2 (T. M. Bryan) ; Mul- 

 lica Hill in Gloucester County 1 (C. C. Abbott). [The forma- 

 tions are probably the Navesink-Hornerstown marl and the Man- 

 asquan marl, K.] 



