528 A. G. LEONARD 



The succession of strata in the above section is unlike that of 

 any other found in eastern Montana or North Dakota, which 

 includes the beds from the Pierre to the Fort Union, in that the 

 Fox Hills appears to be missing. At least, no invertebrates have 

 been found in Nos. 2 and 3, and the plants are too fragmentary 

 to be determined, so that the age of these 150 feet of sandstone 

 and shale overlying the Pierre is in doubt. They have the strati- 

 graphic position of the Fox Hills, but in the absence of Fox Hills 

 fossils it is perhaps best to include them provisionally with the 

 Lance formation. 



In the white sandstone (No. 4) Dr. A. C. Peale collected the 

 following plants i 1 



Populus cuneata Newb. Lauraceous leaf. 



Ginkgo adiantoides (Unger) Heer. Ficus or Sapindus sp. 



Quercus sp. Viburnum sp. 



Ficus trinervis Kn. Viburnum whymperi Heer. 



In the vicinity of Glendive, Barnum Brown records having 

 found fragments of Triceratops and Trachodont dinosaurs. 2 



At Miles City, the Lance formation rises 500 feet above the 

 Yellowstone River and in Signal Butte and the Pine Hills, several 

 miles east of town it is overlain by 200 feet and more of Fort 

 Union shales and sandstones. In this region, as elsewhere, the 

 prevailing color of the Lance beds is dark gray, and they present 

 the usual contrast to the light yellow and ash gray of the Fort 

 Union. The formation here contains several workable coal beds 

 which supply coal to Miles City. 



The following plants were obtained from the Lance formation 

 in the bluffs of the Yellowstone across from Miles City at an 

 elevation of from 115 to 125 feet above the river: 3 



Populus cuneata Newb. Cornus Newberryi Hollick. 



Populus amblyrhyncha Ward. Nelumbo n. sp. 



Populus nervosa elongata Newb. Onoclea sensibilis fossilis Newb. 



Populus rotundifolia Newb. Trapa? microphylla Lesq., as iden- 



Corylus americana Walter. tified by Ward. 



Hicoria ? sp. Corylus rostrata Aiton. 



Platanus sp. 



1 Bull. Am. Mus. Nat. Hist., XXIII (1907), 823. 



2 Proc. Wash. Acad. Set., XI, No. 3, p. 197. 

 ^ Identified by Dr. F. H. Knowlton. 



