HELL CREEK BEDS, CERATOPS BEDS AND EQUIVALENTS 20I 



lowing plants in shaley sandstone about loo feet above the top of 

 the Fox Hills: 



Taxodium sp. 



Populus amhlyrJiyncIia Ward. 



Sapindus affinis Newb. 



Qiicrciis sp. 



Sassafras sp. (Same found in Ceratops beds of Converse County, 



Wyoming). 

 Ficus sp. new ? 

 Ficus sp. new. 



About 25 miles to the northward of Bismarck, near the town of 

 Washburn, the yellow sands and sandstones of the upper Fort Union 

 appear and become the surface formation as far at least as Coal 

 Harbor. At old Coal Harbor in the bluffs overlooking the Missouri 

 typical Fort Union plants and invertebrates were collected. 



II. YULE, BILLINGS COUNTY, NORTH DAKOTA, AND VICINITY. 



I am informed by Prof. A. G. Leonard that near Yule, in western 

 Bowman County, North Dakota, the lower member of the Fort 

 Union (dinosaur-bearing beds) again makes its appearance, and is 

 there about 600 feet in thickness. He has kindly prepared the fol- 

 lowing section: 



Section of lower member of Fort Union {dinosaur beds) in the vicinity of 



Yule, North Dakota. 



Typical buff and light-gray shales and sandstones of the Fort Union out- 

 cropping on the Little Missouri in the vicinity of Yule, where they are seen 

 resting on the "somber beds." 



Somber beds 75 to 100 



Shales and sandstones carrying leaves 25 to 50 



Somber shales and sandstones 200 to 250 



Somber beds containing dinosaur bones. These lie as near as could 



be estimated, about 200 feet above ihe unconformity. The 



vertical range of the dinosaurs wa.s not determined. 



Somber shale and sandstones to unconformity 200 



Unconformity 



Sandstone and andy shale; no fossils found in these beds, but they are 



perhaps Fox Hills 80 



Pierre shale yielding abundant typical Pierre shells, exposed 60 



