1887] - The Perissodactyla. 1065 
j 
-x ie a er el 
Fic. 29. Eeee trigonoceras Cope, skull from above, one-tenth natural size; 
fom White River b d of Colorado. Original; from “ Report U. S. Geol. Survey 
Terrs,” (unpublished), 
ppan”. 
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- 
= 
Res. 30, = ymborodon trigonoceras Cope, palate and teeth, one-fifth Pri size; 
White River bed of Colorado. From a different specimen from PEETI 
`n Fig. 29. Original; from “ Report U. S. Geol. Survey Terts. (unpub- 
