NAMA. 



ted States. 



European 

 time subdi- 

 visions. 



Nashua marl, 

 ee marl (near- 



us). 



Sicilian. 

 Astian. 

 Plaisancian. 



1, Duplin marl, 

 lee marl (near- 

 us). 



Pontian. 

 Sarmatian. 



i. 









i. 



Tortonian. 



s Head marl. 







Helvetian. 



River marl 



nber. 



J r o ve sand 



aber. 



i marl mem- 



Burdigalian. 



ipa formation. 



Aquitanian. 

 Chattian. 





Rupelian. 



,m calcareous 



rl. 



anna limestone. 



iBluff clay. 



Lattorfian 

 (Sannoisian). 



la limestone. 



Ludian (Pria- 



bonian). 

 Bartonian. 



>ort sand, 

 on formation, 

 lhatta buhr- 

 >ne. 



Auversian.c 

 Lutetian. 



?hetigbee forma- 



in. 



li formation. 



jahoma forma- 



in. 



afalia formation. 



Ypresian.c 

 Sparnacian.c 



eola formation, 

 irnochee clay, 

 ton limestone. 



Thanetian.c 

 Montian.c 



d to the upper Ec 



cene and placed 



