CONTRIBUTIONS TO PAL/EONTOLOGY 

 I 



UPPER CRETACEOUS FLORAS OF THE 

 ROCKY MOUNTAIN REGION 



I: STRATIGRAPHY AND PAL/EONTOLOGY OF THE 



FOX HILLS AND LOWER MEDICINE BOW FOR- 



MATIONS OF SOUTHERN WYOMING AND 



NORTHWESTERN COLORADO 



By Erling Dorf 



Princcton University 



With nineteen plates and 8 text figures 



[Issued December 12, 1938] 



