RELATION OF FAUNA TO STRATIGRAPHIC SECTION. 



43 



Locality 

 numbers. 



Feet. 



Meters. 



Present land surface. 



74- 



73- 



37, 72. 



20+ 



75 



6+ 



33 



45 



15 

 9 



8 



5 

 30 



35 



'4 



4-5 

 3 



2-5 



1-5 



9 



3-5 

 10.5 



Dense blue limestone. 



Ocherous, gray, dense, conglomeritic 

 limestone. 



Massive ocherous gray limestone. 



Brown and gray shales and thin- 

 bedded limestone. 



Massive gray oolitic limestone. 



Gray shales. 



Gray crystalline limestone. 



Gray calcareous shale. 



Oolitic limestone. 



Gray and buff shales with limestone 



nodules. 

 Hard brown-gray oolitic limestone. 



Slabby buff limestone, dense and 

 hard. 



80 



40 



3 

 4 



12 



3 to 15 



610+ 



12.5 



9 



'3 



35 



i to 5 



180+ 



Red shales with thin reddish lime- 

 stones. 



Red shale and argillaceous limestone, 



with thin yellow limestones. 

 Red shale and thin limestone. 

 Argillaceous yellow limestone. 

 Red calcareous shale. 

 Red sandstone and conglomerate. 



Purple argillites; siliceous limestones 

 and dikes of greenstone. 



FIG. 3. PARTIAL SECTION OF THE SIMIAN SYSTEM SOUTH OF TUNG-YU, SHAN-SI. 



