ey OE a ee ee ee ee 
STS, Oe ge ee ee See eS 
H. M. Bannister—Age of the Laramie Group. 245 
of the Laramie Cretaceous are not exposed, but the sandstones 
near the summit of the group contain the enormous workable 
coal-beds of the Rocky Mountains and Wyoming Coal Compa- 
nies. These coal-bearing Laramie beds dip at angles from 16° 
to 25°, whereas the Vermilion Creek Tertiaries are nearly 
horizontal over them, and carry remains of the genera Cory- 
aM i 
