92 



ANNAL8 NEW YORK ACADEMY OF SCIENCES 



Fig. 53. — Exposures of the Morrison formation in Como Bluff, Wyoming. 



After Osborn. 



^MtfidfitfUfiWaHMttWattS 



Fig. 54. — Section of the Morrison and Sun- 

 dance formations at Como Bluff, Wtjo- 

 ming. 

 1. — Morrison formation ; 2. — Sundance 



formation. Scale. 125 feet to 1 inch. 



(Loomis.) 



Fig. 55. — Section of the Morrison and Sun- 

 dance formations on the south side of 

 Medicine Anticline, or "Bone Cabin 

 Draw," Wyoming. 

 1. — Morrison formation ; 2. — Sundance 



formation. Scale, 125 feet to 1 inch. 



(Loomis.) 



Section on south side of Medicine Anticline, or -Bone Cabin Draw" 



Dakota [Cloverlyl 



Yellow sandstone . 

 Black sandstone. . . 

 Gray sandstone . . . 



Feet 



248 



2 



30 



