"CERATOPS beds" OF WYOMING AND MONTANA 255 



Popiilus cuneata Newb. 

 Leguminosites arachioides Lesq. 

 Onoclea sensibilis fossilis Newb. 

 Sequoia nordenskioldi Heer 

 Taxodium occidentale Newb. 

 Glyptostrobus europceus 

 Car piles sp. 



Populus rotundifolia Newb. 

 Populiis nervosa elongata Newb. 

 Populus amhlyrhyncha Ward 

 A r alia notata Newb. 

 Corylus rostrata Aiton. 

 Viburnum sp. 



The "Laramie" and older rocks of the section are not described 

 in Woolsey's report, but from the exposures I visited with Mr. R. W. 

 Richards on Dean Creek and from others I have seen north of Mussel- 

 shell Post-office it is evident that the "Laramie" includes the"Cera- 

 tops beds" and that it is the same formation that is described by R. 

 W. Stone^^ as Laramie on Fish Creek northeast of the Crazy Moun- 

 tains, though there it and all the overlying formations are much thicker. 



Area northeast of Crazy Mountains, Montana. — The stratigraphy 

 of the area just mentioned, which is about 50 miles west of the Bull 

 Mountains, had been treated by Weed,^^ Douglass,^^ and Stanton and 

 Hatcher,'^ prior to the work of Stone, above referred to, who made a 

 detailed geologic map (not yet published) in connection with a study 

 of the coal resources. 



After Weed's field studies were finished the work of Douglass 

 brought out the fact that in this region a non-marine formation (now 

 referred to the Judith River formation) is intercalated in the marine 

 shales of the Montana group and that there is another coal-bearing 



22 Bull. U. S. Geol. Survey, No. 341, 1908, pp. 78-80. 



23 Weed, Walter Harvey: The' Laramie and the overlying Livingston for- 

 mation in Montana, Bull. U. S. Geol. Survey, No. 105, 1893. The Fort 

 Union formation, Am. Geologist, Vol. XVIII, 1896, pp. 201-21 1. Little 

 Belt Mountains folio (No. 56), Geol. Atlas, U. S., 1896. 



^* Douglass, Earl: A Cretaceous and lower Tertiary section in south cen- 

 tral Montana, Proc. Am. Philos. Soc, Vol. XLI, 1903, pp. 207-224. A 

 geological reconnaissance in North Dakota, Montana, and Idaho; with 

 notes on Mesozoic and Cenozoic geology, Annals Carnegie Mus., Vol. V, 

 1909, pp. 266-278. 



2^ Stanton, T. W., and Hatcher, J. B.: Geology and Paleontology of the 

 Judith River beds. Bull. U. S. Geological Survey, No. 257, 1905, pp. 59, 60. 



Proc. Wash. Acad. Sci., August, 1909. 



