PALEOGEOGRAPHIC MAPS OF NORTH AMERICA 427 
ZB QO 
paseererinece 
nee atee 
<> he terete rate 
‘S SRS 
SA 
ce 
So 
’ 
BSS 
INS 
x 
os 
IM 
UPPER CRETACEOUS (:\ S888 Shay cse IN 
<i 
— NORTH AMERICA 
oso 9 mo Lud wo miles 
LEGEND 
OCEANIC BASINS 
MARINE WATERS (EPICONTINENTAL) 
SEA OR LAND. MORE LIKELY SEA 
LAND OR SEA. MORE LIKELY LAND 
LANDS 
INDETERMINATE AREAS 
POLAR ——— 
EQUATORIAL = =—————~ Ss» _ INCLUDING MARINE SEDIMENTS 
120° 110° 2 90° 
MARINE CURRENTS 
