WII Ki I Ji. r LE ANn ] CORRELATION OF CERTAIN SECTIONS 133 
1>\ the red deposits prevailed at that spot. The evidence at hand points 
to a greater persistence of the red sedimentation in the eastern than in 
the western sections. But only as the time horizons are determined 
by the fossils is it possible to correlate equivalency of horizons across 
the regions which thus differ in the character of the sediments laid 
down. The application of formational names therefore on the basis 
of likeness in the character of the sediments, which are known to 
geographically differ, must necessarily be regarded as not significant 
of actually synchronous time divisions. 
