EXPLANATION OF PLATE 20. 



Fig. 1. Section across Como Blnff. south side of Como anticline. 

 Couio= Morrison ( Atlantosaurus Beds of Marsli). 

 Shirley=Baptanodon Beds of Marsh. 

 " 28. Saud.v clay " is the equivalent of 28 of fig. 2. 

 2. Section across "Bone Cabin Draw," south side of Little Medicine 



anticline. 

 "28. Gray sandstone" contains bone layer of the famous "Bone Cabin 



Quarry," and probably equivalent to the fossil layer of Quarry 13- 



Both figures after Loomis. 

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