646 NORTH AMERICAN INDEX FOSSILS. 



beds, representing the higher Permic, and equivalent, according to 

 Beede, to the beds below the Quartermaster and White Horse of 

 northern Texas. 



In the Panhandle of Texas and in Oklahoma the following 

 formations represent the late Palaeozoic.*^ 



SUPERFORMATION. 



Dockum beds — Triassic. 



{Dis conformity or unconformity.) 



Permic. 



Double Mountain beds. 



Quartermaster (275 ft.) red clay shale and sandstones 



and some gypsum. 

 Greer (275 ft.) subdivided in descending order into 

 Mangum dolomite, Collingsworth Gypsum, Cedar-Top 

 Gypsum, Haystack Gypsum, Kiser Gypsum, and 

 Chaney Gypsum. 



Clear Fork beds. 



Woodward (425 ft.) comprising Day Creek dolomites; 



White Horse sandstone and Dog Creek shales. 

 Blaine (100 ft.) comprising Shimer Gypsum, Medicine 



Lodge Gypsum, Ferguson Gypsum. 

 Enid (1,500 ft.) red shales. 



Wichita- Albany beds (1,800 ft.) (representing the Permo- 

 Carbonic or Artinskian of Europe). 



Carbonic. 



Missiourian. 



Cisco (840 ft.). 

 Canyon (930 ft.). 



Des Moinian. 



Strawn. 



Arkansan. 



Millsap. 

 Bend. 



( Unconformity. ) 



**^ Gould, Water Supply Paper 154, p. 16. 



