THE UPPER CRETACEOUS OF NEW JERSEY 83 



out from their original place of deposition, and have been redeposited 

 in these sands in Miocene time. This interpretation, however, seems 

 to be untenable on account of the stratigraphic relations of the beds, 

 on account of their geographic distribution, and on account of the 

 difference in character between these beds and the dark clay beds 

 which form the base of the undisputed Miocene in the adjacent region. 

 Furthermore, wells drilled to the south of the outcrop of the "yellow 

 sand" show the presence of a similar arenaceous bed beneath the 

 Manasquan marl. 



If the reference of these beds to the Cretaceous is correct, it shows 

 that the Terebratula harlani zone has a much greater vertical range 

 in New Jersey than the shell bed at the summit of the Sewell marl, 

 in this respect corresponding with the conditions in Maryland where, 

 Clark says, "the Terebratula harlani is no longer limited to its former 

 horizon at the top of the Sewell marls, but occurs frequently within 

 and even at the top of the lime-sands." 1 



As regards the "upper" or Manasquan marl of Clark, there is 

 no difference of opinion, except as Clark's earlier interpretation of the 

 "yellow sand" affected the lower limits of the formation in his original 

 definition. The fauna differs in most of its species from the lower 

 faunas, Caryatis veta and Crassatella delawarensis being two species 

 usually found in this horizon and not observed elsewhere. The bed 

 is especially characterized by the large number of sharks' teeth it 

 contains. The higher beds of the "upper marl," separated by Clark 

 as the Shark River formation, are recognized, by everyone who has 

 studied them, as of Eocene age, and therefore they need no further 

 consideration here. 



From the view-point of the writer, the arrangement of the forma- 

 tions, as expressed in the fourth column of the table on p. 76, seems 

 best to express the true faunal relationship of the beds. With the 

 exception of the Tinton beds and the Long Branch sand, no new 

 names are introduced. For the designation of the four major divi- 

 sions the letters A, B, C, and D are used, instead of Clark's four 

 names "Matawan," "Monmouth," "Rancocas," and "Manasquan," 

 these divisions being strictly faunal, while Clark's names were pro- 

 posed to designate stratigraphic divisions. 



1 Annual Report of the State Geologist of New Jersey, 1897, p. 189; also Bulletin 

 of the Geological Society of America, Vol. VIII, p. 339. 



