90 



ANNALS NEW YORK ACADEMY OF SCIENCES 



Dinosaur remains have been found in great abundance in this region, 

 and a number of very productive bone quarries have been opened. The 

 following section of Como Bluff is given by Darton : 



Feet 

 White, massive sandstone, conglomeratic (Cloverly). 



Bluish to greenish shales 50 



Limestone, lumpj^ 1 



Bluish to olive green shales 30 



Limestone, lumpy 1 



Blue and red shale 120 



202 



Fig. 50. — Section of the Morrison forma- 

 tion on, Red Creek, 3 miles east of Black 

 Mountain summit. Owl Creek Mountains, 

 Wyominy. 



Scale, 125 feet to 1 inch. (Darton.) 



Fig. 51. — Section of the Morrison forma- 

 tion in Como Bluff, Wyoming. 

 Scale, 125 feet to 1 inch. (Darton.) 



Three sections in the north and south sides of the Como anticline and 

 in the Medicine anticline or "Bone Cabin Draw" are given by Loomis 

 (1901, 6) as follows: 



Section on north, side of the Como Anticline 



Dakota [Cloverly] Feet 



Straw yellow sandstone 120+ 



Black sandstone 3 



Yellow sandstone 12 



Jurassic [Morrison and Sundance] 



Bluish-green clay 20 



Green clay 40 



Flint . . . ■. 1/3 



Green clay 15 



Concretions 2 



Green claj' 9 



Green clay with small concretions 9 



Maroon clay with small concretions 28 



Green clay 20 



Sandstone 2 



