244 The Upper Cretaceous Floras of the World 



Quercus platinervis Lesquereux 



Quercus Victoria; Dawson 



Quercus sp. 



Sabal imperialis Dawson 



Sabal pacifica Dawson 



Salix sp. 



Sassaf?-as sp. 



Sphenopteris elongata Newberry 



Twniopteris plumosa Dawson 



Taxodium cuneatum Newberry 



Taxodium sp. 



Tumion densifolium (Dawson) Knowlton 



Ulmophyllum priscum Dawson 



Ulmus dubia Dawson 



These beds probably represent the Chico horizon of the Pacific Coast of 

 the United States. 



From beds of possibly Colorado age on the Peace and Pine rivers 



Dawson recorded the following : 



Antholithus horridus Dawson 

 Asplenium niobrara Dawson 

 Betula sp. Dawson 

 Cycadites unjiga Dawson 

 Biospyros nitida Dawson 

 Fagus prato-nucifera Dawson 

 Magtwlia tenuifolia Lesquereux 

 Myrica longa (Heer) Lesquereux 

 Populates eyclophylla (Heer) Lesquereux 

 Protophyllum boreale Dawson 

 Protophyllum leconteanum Lesquereux 

 Tumion dicksonioides (Dawson) Knowlton 



From beds classed as of Pierre age the same author recorded the fol- 

 lowing : 



Abietites tyrrelli Dawson 



Betula sp. 



Hicoria sp. 



Populus sp. 



Sequoia sp. 



Ulmus sp. 



From the Belly River formation Dawson recorded the following: 



Acer saskatchewanense Dawson 



Betula sp. 



Ginko sp. 



Nelumbium saskatchewanense Dawson 



