CONTRIBUTIONS FriOM 

 OEPARTMENT OF GEOlOGY 

 ^PRINCETON UNIVERSITY 



CONTRIBUTIONS TO PAL^ONTOLOGY 



I 



UPPER CRETACEOUS FLORAS OF THE 

 ROCKY MOUNTAIN REGION 



I: STRATIGRAPHY AND PAL^ONTOLOGY OF THE 



FOX HILLS AND LOWER MEDICINE BOW FOR- 



MATIONS OF SOUTHERN WYOMING AND 



NORTHWESTERN COLORADO 



By Erling Dorf 



Princeton University 

 With nineteen plates and 8 text figures 



7- 



[Preprinted from Caenegie Institution of Washington Publication No. 508, pages 1 to 78, December 12, 1938] 



