"CERATOPS beds" OF WYOMING AND MONTANA 253 



of Forsyth. Here also the "Ccratops beds" rest directly on marine 

 shales and are exposed in prominent wooded bluffs to a thickness of 

 about 300 feet. The following detailed section measured September 

 21, 1908, may be of interest: 



Section i mile west of Myers, Montana. 



Feet. 



1. Massive, light-gray sandstone capping one of the highest buttes 



southwest of Myers, with fragmentary remains of Ceratopsia, 

 Trachodon, and Ornithomimus 40 



2. Thin-bedded sandstones and sandy shales with occasional large 



calcareous concretions in which Splicerium, Goniohasis, Cam- 

 peloma? and fragments of turtle shell were collected 20 



3. Massive greenish gray rather soft sandstone with many brown 



indurated bands and masses and frequent irregular deposits 



of ' ' clay ball " conglomerate especially near the base 35 



4. Shale and very soft gray sandstone 30 



5. Soft sandstone with band of brown concretions and indurations 



near middle, and fragments of dinosaur bone and crocodile 



scute near base 25 



6. Massive gray sandstone with a brown indurated band at top 18 



7. Shale, carbonaceous in upper part 10 



8. Very soft, argillaceous sandstone 5 



g. Carbonaceous shale with fragments of dinosaur bones i i 



10. Clay shale, more or less sandy, with several carbonaceous bands 40 



11. Very soft argillaceous sandstone with an indurated band near 



the base 10 



12. Shale, mostly carbonaceous 10 



13. Massive gray sandstone with indurated bands and masses and 



Ceratopsia bones at base 40 



14. Shales and soft sandstone passing laterally into massive sand- 



stone 20 



15. Soft sandstones and shales 15 



16. Sandy shales with thin bands of sandstone apparently forming 



a transition to the beds below 12 



17. Soft gray Pierre shale with a band of calcareous concretions in 



the upper part which yielded Baculites ovatus, Protocardia suh- 

 quadrata to flood plain of Yellowstone River 75 



Total 4o6i 



Westward from Myers to the neighborhood of Custer and Junction 

 City the rocks lie in a broad shallow syncline with scarcely perceptible 

 dips, so that the "Cera tops beds" are continuously exposed along 

 both sides of Yellowstone River, and on the left bank they extend 

 still farther west to Pompey's Pillar and beyond. The coal bed on 

 the high land 4^ miles southeast of Bighorn station from which 



