338 R. S. Lull — Mammals and Horned Dinosaurs. 





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Thin-bedded brown and gray sand- 

 stone 



Yellowish massive sandstone with 

 concretions containing Fox Hills 

 fauna 



Pierre shale 



130 



100 



Stanton and Knowlton's sketch sec- 

 tion of 1897 (p. 131) is reproduced in 

 Figure 5. 



Stanton's section (c), 1909. — In 1910 

 (p. 181) Doctor Stanton gives an addi- 

 tional section in this area, taken on the 

 south side of the Cheyenne River at the 

 mouth of Lance Creek, and extending up 

 the creek a mile and a half or two miles. 

 It is as follows : FEET 



White cross-bedded sandstone with 

 irregular brown indurated bands, 



masses, and concretions ... 50 



Soft sandy shale with bands of lig- 

 nitic shale. Fragments of dino- 

 saur bones were found on the 



surface here ... 50 



Sandy shale full of Corbicula 

 cytheriformis? and Corbicula 



subelliptica var. moreauensis £ to 1 



More or less carbonaceous shale 15 



Soft massive gray sandstone with 



many brown concretions 25 



Gray sandstone and sandy shale 

 with bands of sandstone contain- 

 ing Fox Hills fossils, about 150 



Cross-bedded, ripple marked, red- 

 dish brown sandstone with irreg- 

 ular base 8 to 10 



Massive soft buff sandstone with 

 many large concretions and in- 

 durated masses and an abundant 



Fox Hills fauna 100 



Pierre shale with only the top ex- 

 posed 



Stanton says further of this section : 



"When studying the section it was 

 believed that the upper four members 

 belong to the Lance formation, but after- 

 ward when comparison was made with 

 sections at the south end of the field it 

 seemed more probable that all the beds 



