on the Geological Survey of South Carolina. 



69 



^ The list of fossils collected show the following result : 3 spe- 

 cies of Cephalopoda, 8 of Gasteropoda, 8 of Pteropoda, 20 of 

 Lamellibranchiata, 17 of Polyparia, maxilla, teeth, and vertebras 

 of the Zeuglodon, teeth of an undetermined Saurian, teeth of 

 8 genera of fishes. Mr. Tnomey remarks, that " this list pre- 

 sents a very different result from that obtained from the fossils of 

 the burr-stone ; for besides the introduction of the classes Cepha- 

 lopoda, and Pteropoda, there is a great numerical falling off in 

 the Gasteropoda; and yet the occurrence of oysters in these beds, 

 and of corals in some of them, would indicate a sea of no great 

 depth at the time of their deposition." 



Beds of the Ashley and Cooper rivers. — These are the newest 

 deposits of the eocene in South Carolina, and they are composed 

 principally of dark marls, which are distinguished from the marl 

 of the previously described beds, not less by the difference in their 

 organic remains, than in that of color. Localities of these de- 

 posits are described, not only on the Ashley and Cooper rivers, but 

 at numerous other places. 



The remains of cartilaginous fishes are very abundant in their 

 beds, and Mr. Tuomey referring to a locality at Bee's ferry on 

 the Ashley, remarks, " It would seem as if about the close of the 

 eocene period, these voracious monsters, conscious of their ap- 

 proaching end, had congregated here to die, and it is no exagger- 

 ation to say, that more than a bushel of fishes' teeth had been 

 collected here within a few years. I have visited the locality 

 several times, and never without finding a large number of 

 specimens." 



The fossils mentioned as occurring in these beds are the fol- 

 lowing : 



Mammalia. — Equus, ( teeth . ) 



Tapir, 



a 



Mauatus, 



(ribs.) 



) 



Reptilia.— Chelcmia. 



Pisces.— Pristis, 



Ptychodus, 



Myliobates, 



Carcharodon, 

 Co rax, 



Galeocerdo, 



Zeuglodon, (head and vertebras.) 



1 species 

 1 " 



5 



10 



4 



6 





a 



a 



Mollusca.— Cephalopoda, 



Gasteropoda, 

 Lamellibranchiata, 



: Also of Cirripedia, 3 species, and of Corals 1 species. Of these 

 --••— — 'the existence of the re- 



Hemipristis, 2 species, 

 Glyphis, 



Otodus, 

 Oxyrhina, 



Lamna, 

 Cajlorhyncus, 



1 species. 



7 u 

 12 " 



1 

 4 

 9 

 9 

 1 



>. 



.; 



u 



a 



u 



Mr 



that 



jnains of terrestrial mammalia shows that they could not have 



been dennsifpH at « ^™«* Ai«**r>nt> frnm land." 



