HATCHER: OSTEOLOGY OF HAPLOCANTHOSAURUS 65 
Another quarry long worked by Professor Cope is shown in Fig. 27. This 
quarry is situated about 500 yards West of the ‘“‘ Nipple” and the dinosaur bones, 
belonging for the most part to Camarasauwrus, were found imbedded in a thick 
stratum of chocolate-colored shales immediately beneath the light-colored, heavily 
bedded, jointed sandstones seen at the summit in the figure and provisionally 
Fic. 27, Eastern entrance to Cope quarry. Light-colored Dakota sandstone at top underlaid by 
chocolate-colored shales with remains of Camarasaurus. 
referred to the Dakota. Between this quarry and the ‘“‘ Nipple” there lies a com- 
paratively level plain some 500 yards in width covered over with a growth of 
juniper, pifon and other bushes characteristic of this region as shown in Fig. 28. 
That quarry in this region which was perhaps worked with most success by Pro- 
fessor Cope or men in his employ was situated about one mile north of that last 
mentioned and at the same horizon, in chocolate-colored shales lying just beneath 
the supposed Dakota sandstones. This last quarry I have never visited, but Mr. 
Lucas, who was Professor Cope’s principal collector in this region, accompanied Mr. 
Utterback to the quarry and explained to him how the bones were found. Accord- 
ing to Mr. Lucas the more complete of the two skeletons of Camarasaurus supremus 
which are now known to have been treated as one skeleton in Cope’s descriptions of 
the species, was found at this last locality. The location of this quarry is about one 
mile north of the “ Nipple” and on the edge of the escarpment facing Garden Park. 
The above are the most important localities that have been worked for fossils in 
this region although dinosaur remains have been found here at many other places 
