Hatchfr : Thk Ji kassic Dinosaur Deposits. 337 



layer of marl at a somewhat lower hori/on, are abundant remains of 

 Unios belonging to various species. 



The position and manner in which many of the bones lie in this 

 (juarry would indicate that the animals to which they belonged lived 

 and met their death in the immediate vicinity if not on the exact spot 

 where they are now found. Moreover, the frequent examples of 



t'lc. 3. The "Nipple" from tlie north showing in the foreground llie trench cut 

 by Professor Cope in collecting Dinosaur remains. 



ripple marks, cross-bedding and other characteristics already referred 

 to bear evidence that this immediate region was the habitat of these 

 animals during Jurassic times and that the sediments constituting the 

 rocks were accumulated not over the bottom of a great inland sea or 

 lake, but rather on the bottoms, along the shores and over the flood 



