BULLETIN 611 PLATE XI 
U. 8 GEOLOGICAL SURVEY 
A, BLUFFS OF LANCE FORMATION ON YELLOWSTONE RIVER WEST OF HYSHAM, MONT. 
B, FOSSIL PALM LEAF OF EOCENE AGE FOUND NEAR HYSHAM, MONT, 
The climate of Montana must have b 
t f t een warmer and more moist than it is to-day to h 
of palms and other subtropical plants. ? eee 
