296 BERRY: MESOZOIC FLORA OF ATLANTIC COASTAL PLAIN 
flora up to 88 species and recorded for the first time a species 
from the Matawan formation and fifteen species from the Raritan 
formation. During the last few years the manuscript for the 
Maryland Geological Survey monograph on the Upper Cretaceous 
has been completed so that it is now possible to present a brief 
summary of these floras, together with certain deductions regarding 
the age of the deposits. 
THE RARITAN FLORA 
The oldest of these Upper Cretaceous floras is that found in the 
Raritan formation, of the same age as the Amboy clays in New 
Jersey, whose flora pied the late Professor Newberry for so many 
years. The Raritan formation in the vicinity of Raritan Bay in 
New Jersey carries several heavy beds of clay which have furnished 
a flora of 166 species... In Maryland, however, the Raritan is 
not only thinner but it is predominantly sandy and has thus only 
yielded fragments of the varied flora found in its New Jersey 
extension. The Maryland Raritan flora is of especial interest 
nevertheless since it contains several characteristic forms of the 
Dakota sandstone of Kansas and Nebraska, such as Aspidio- 
phyllum, Protophyllum, and Araliopsis, which have never before 
been found except in the type area of the West. There are nine 
localities in the Maryland Raritan where ‘identifiable fossil plants 
have been found. These are, from northeast to southwest: Bull 
Mountain and Shannon Hill in Cecil County; Cedar Point in 
Baltimore County; Forked Creek and Drum Point RR. in Anne 
Arundel County; Brightseat and Glymont in Prince George's 
County; and East Washington Heights and Overlook Inn Road 
in the District of Columbia. Combining the identifications from 
these several localities gives the following list of species as com- 
prising the known Raritan flora in Maryland: 
Cladophlebis socialis 
Cinnamomum Newberryt 
Asplenium Dicksonianum 
Podozamites lanceolatus 
Podozamites marginatus 
Czekanowskia capillaris 
Salix Lesquereuxit 
Sassafras acutilobum 
Aralia washingtoniana 
Araliopsis breviloba 
Araliopsis cretacea 
Araliopsis cretacea dentata 
1 Berry, E,W. Bull. Geol. Surv. New Jersey 3. rgrt. 
