136 



CHARLES S. PROSSER 



is Artinsk, as Tschernyschew believes." The translation of Dr. 

 Tschernyschew's statement is as follows: 



The Neosho beds and possibly also the lower part of the Chase, appear 

 analogous to the Russian Schwagerina horizon and the remainder of this as well 

 as the Marion beds one must consider as homotoxial with the Russian Permo- 

 Carboniferous and lower Permian. Finally, the Wellington and Cimarron beds 

 may correspond to the lower red-colored Permian in eastern and northern 

 Russia.^ 



The following correlation table of the Russian and American 

 formations, omitting the column for California, Nevada, Utah, and 

 Colorado, follows Dr. Tschernyschew's general discussion of these 

 deposits:^ 



It is to be remembered that Dr. Tschernyschew believes in the 

 separation of the Permo- Carboniferous from the Carboniferous and 

 Permian systems. He places the Artinsk in the Permo- Carboniferous 

 and directly overlying the Artinsk is the dolomitic limestone (Kungur) 

 the base of which marked the lower limit of Murchison's original 

 Permian, according to some authors, while others make its top the 

 base. The Permo-Carboniferous of the Russian geologists is generally 



1 Mem. comite geologique, Vol. XVI, No. 2, 1902, p. 703. The original is as 

 follows: "Die Neosho-Schichten und vielleicht audi die untere Partie der Chase- 

 Suite erscheinen dem Schwagerinen-Horizonte Russlands analog und der Rest von 

 dieser, sowie die Marion-Schichten muss man als dem russischen Permo-Carbon und 

 unterer Perm homotaxal ansehen. Die Wellington- und Cimarron-Schichten endlich 

 diirften der unteren roth gefarbten Perm-Suite im Osten und Norden Russlands ent- 

 sprechen." 



2 Ibid., p. 395 of Russian and 706 of German text. 



