Formation name 

 (Walcott).* 





Robson limestones 

 (above Extin- 

 guisher fauna). 



Appa; 

 Mo 

 23d 



Lynx limestones 

 (below Extin- 

 guisher fauna). 



Greal 

 3,0( 

 str; 

 Wa 

 Ex 



Titkana limestones. 





Mumm limestones. 



Descr 

 an 

 wh 

 phi 



Hitka formation. 



Merel 

 Tit 



Tatay limestones. 



Spelli 

 by 

 Boi 



Chetang limestones. 





Hota formation. 



Oonfi 

 sils 

 of 



"M 



Mahto sandstones. 





Tah formation. 



Confi 

 sils 

 of 



the 



McNaughton sand- 

 stones. 



Left 1 

 son 



* Names in stratigraphic o 



