256 EDWARD W. BERRY 



Cissites, Sterculia, Quercus, Populus, Eucalyptus, and Ficus. The 

 genus Celastrophyllum with a large display of forms in both the 

 Patapsco and the Raritan has one identical species, C. hrittonianum 

 Hollick, while C. hunteri of the former is very close and ancestral if 

 not actually identical with C angustijolium Newb. of the latter. 

 Eucalyptus has closely related species at both horizons while Ficus has 

 a common species, F. myricoides Hollick, in both formations. 



Among the conifers the widespread Widdringtonites ramosus (Font.) 

 Berry of the Patapsco is closely related to, if not identical with, the 

 equally common Widdringtonites reichii (Ettings.) Heer of the 

 Raritan and succeeding formations. The genus Frenelopsis has 

 closely related species in both while Sequoia and Thuyites have already 

 been mentioned as well as the cycadean genus Podozamites which 

 ranges back to the Triassic. Two Raritan species are recorded from 

 the European Albian. These are Sequoia reichenbachi (Gein.) 

 Heer and Eucalyptus angusta Velen., the former a very wide-ranging 

 form and the latter recorded from the Albian of Portugal and the 

 Cenomanian of Bohemia. 



Turning to the elements in the Raritan flora which ally it with 

 younger floras, we find that six of the Raritan species persist as late 

 as the Senonian of Europe and fifteen are found in the Patoot beds 

 of Greenland which are also usually regarded as of Senonian age. 

 All but four of the latter are, however, found in the Cenomanian beds 

 of that country and practically all of the others and those common to 

 the Senonian of Europe as well occur somewhere in Cenomanian 

 strata. There are thirty-four species common to the Raritan flora 

 and that of the Dakota Group,' the former lacking more particularly 

 the numerous forms of Betula, Quercus, Platanus, etc., which char- 

 acterize the latter. There are 32 species common to the Raritan and 

 to the Atane beds of Greenland, the latter formation being usually 

 regarded as Cenomanian in age, and there are sixty-seven species 

 common to the Raritan and Magothy. floras, although these latter 

 figures are somewhat obscured by the difficulty of determining the 

 "probable age of many of the species recorded from Long Island and 

 other areas in the vicinity of the terminal moraine and by the additional 



I This statement applies only to New Jersey forms and is intensified if the sup- 

 posed Raritan of Staten Island and Long Island is included. 



