CRETACEOUS PERIOD. 



471 



of our own forests, — the Tulip-tree, Oak, Dogwood, Beech, Poplar, 

 Willow, Alder, Button-wood, and Sassafras, or the genera Lirioden- 

 dron (fig. 747), Quercus, Cornus, Fagus, Populus, Salix (fig. 749), Alnus, 

 Platanus, Sassafras (fig. 746), Liquidambar, Taxodium, etc. These spe- 

 cies have been collected in New Jersey, Alabama, Nebraska, Kansas, 

 New Mexico, and Vancouver's Island on the Pacific (Newberry), and 

 mainly from the earliest or Dakota group. 



Besides Angiosperms, there were also the first of the Palms. It is, 

 however, still questioned whether any American Cretaceous speci- 

 mens of this tribe have been found. Fossil palm-leaves of the fan- 

 palm kind (genus Salal) are met with on Vancouver's Island, in 

 deposits which have been pronounced to be Cretaceous. 



Fig. 746, Sassafras Cretaceum Newberry, from the Dakota group, along 

 with the three following (Meek & Hayden) : fig. 747, Liriodendron Meekii 



Figs. 746-749. 



Angiosperms (or Dicotyledons).— Fig. 746, Sassafras Cretaceum ; 747, Liriodendron Meekii ; 

 748, Leguminosites Marcouanus ; 749, Salix Meekii. 



Heer; fig. 748, Leguminosites Marcouanus Heer ; fig. 749, Salix Meekii 

 Newberry. 



