14 PROCEEDINGS OF THE ACADEMY OF 



LIST OF THE EEPTILIA OF THE EOCENE FORMATION OF 



NEW JERSEY. 



BY EDW. D. COPE. 



The Eocene Formation occupies in New Jersey, according to 

 Cook, a band extending from near the centre of the State, north- 

 eastward, to the Atlantic coast in Mammouth County, in the 

 neighborhood of Deal. Lithologicallj 7 it consists of a light green 

 glauconite mixed with variable quantities of clay and fine sand. 

 The character of its fossils is marine, including sharks, rays, 

 sawfishes, and swordfishes in great abundance. These forms 

 especially abound in the southwestern part of its area, for ex- 

 ample, at Vincenttown, but in the northeastern region reptiles 

 are more abundant, with cetaceans. It is also in that section, 

 near to Shark River especially, overlaid by a thin stratum of 

 loamy sand, which contains fragmentaiy remains of terrestrial 

 vertebrates of the Miocene period ; e. <?., Elotherium, Dicotyles, 

 Bhinocerus, etc. Whether the larger mammal described as Hemi- 

 caulodon (Cope) and Anchipi^odus (Leidy) were derived from this 

 or from the Eocene bed remains uncertain. 



The reptiles belong to the Ophidia, the Crocodilia, and the 

 Testudinata, and number onl}' ten species. They are as fol- 

 lows: 



OPHIDIA. 



PAL.EOPHIS LITTORALIS, Cope. 



Proc. Acad. Nat. Sci. Phila., 1868, 234. Trans. Auier. Philos. Soc, XIV. 

 227. 



Shark River. 



PALJEOPHIS HALIDANUS, Cope. 



1. c. 1868, 235. Tr. A. P. S., XIV. 227. Dinophis, Marsh. 



Squankum. 



PALJEOPHIS GRANDIS Marsh. 



(Dinophis.) Amer. Journ. Sci. Arts, 1859, 39S ; Cope Trans. Amer. 

 Philos. Soc, XIV. 228. 



Shark River. 



[April 1G, 



