U. S. GEOLOGICAL SURVEY 



MONOGRAPH 55 PLATE XXXlll 



A. BRONTOPS DISPAR, FEMALE 



In Carnegie Museum. The skull belongs to another individual. Slightly i 



of Dr. W. J. Holland 



than one-twentieth natural si2;e. Courtesy 



B. BRONTOPS ROBUSTUS, TYPE 



Yale Mas. 12043. Oblique side view. About one twenty-fourth natural size. Maximum height 8 feet 21/2 inches to top of 

 dorsal spine. Courtesy of Prof . R. S. Lull. (Compare PI. XXXIV) 



MOUNTED SKELETONS OF BRONTOPS 



