170 Berry: MESOZOIC FLORA OF ATLANTIC COASTAL PLAIN 
the northern Atlantic coastal plain. This serves to fix the age 
of the Bingen within the somewhat broad limits extending from 
the base of the Raritan to the base of the Ripley. The chief 
interest in the present contribution is, however, the somewhat 
more definite indications of age furnished by these collections. 
The first two localities, namely the Big Railroad Cut and 
Adams Kaolin cuts in Pike County, are definitely located by Mr. 
Miser in the lower part of the upper Bingen and I shall consider 
these first. A total of nineteen species are determined. Of these 
three occur in the Woodbine and fourteen occur in the Tuscaloosa, 
eleven in the Raritan, thirteen in the Magothy, eleven in the Black 
Creek, three in the Eutaw and one in the Ripley. Among the 
upper Bingen plants are eight that are unknown as early as the 
Raritan. This fact and the presence of the Manihotites, which is a 
characteristic Eutaw and Ripley species, indicates that the upper 
Bingen is to be correlated with a part, presumably the upper, of 
the Woodbine, with the upper part of the Tuscaloosa and with the 
Eutaw formation of the Eastern Gulf area. 
The correlation of the upper Bingen with the Eutaw confirms 
the suggestion of Veatch that it répresents the interval during 
which the Eagle Ford formation was deposited throughout the 
Texas area, and as he and other students have suggested it may 
include the chronologic equivalent of still higher formations dif- 
ferentiated in Texas. -This can only be determined paleo- 
botanically by the discovery of more abundant materials from a 
number of horizons. 
The locality in Howard County has furnished but twelve 
species, only four of which are found in the upper Bingen. It has 
not furnished any trace of the Dewalquea which is so common and 
characteristic a form in the upper Bingen nor are any of the four 
conifers of the latter represented. Forms like Myrica cinnamomi- 
folia and Liriodendron quercifolium, peculiar to the Raritan, indi- 
cate that the lower Bingen is to be correlated with the Raritan, 
the lower Tuscaloosa and a part, presumably the lower, of the 
Woodbine. : 
The boundaries of all of the Upper Cretaceous formations of 
the Coastal Plain, determined as they have been by lithological 
differences instead of by their contained faunas or floras, overlap, 
