724 CHARLES S. PROSSER 



faunal and lithologic characters can be duplicated in the Permian 

 of his own country." * The specimens of Phacoceras and other 

 Cephalopods from Fort Riley and Junction, Kansas, were identi- 

 fied and described by Professor Alpheus Hyatt and came from 

 the Fort Riley limestone. Therefore, according to the above 

 statement Dr. Tschernyschew correlated the Fort Riley lime- 

 stone and superjacent Paleozoic formations with the Permian 

 of Russia. 



Correlation of the Ka?isas and Texas beds. — Professor Cum- 

 mins reported that: 



The Phacoceras Dumb lei, Hyatt, has been found only along a very nar- 

 row horizon in the Texas Permian This fact will assist 



materially in correlating the Texas and Kansas beds, as that fossil has been 

 reported only from cne locality in the Kansas area, where it is associated 

 with the same fossils as in Texas. It is quite certain that the Fort Riley 

 horizon is the same as the Wichita division of Texas, and is at the very top 

 of the division. 2 



In ascending order the divisions of the Texas Permian as 

 described by Professor Cummins are the Wichita, Clear Fork 

 and Double Mountain; 3 while the Albany division 4 was left " as 

 the top of the Coal-measures" 5 although the statement was 

 made that " It may be that the Wichita and Albany divisions 

 are but different facies of the same formation " for the Wichita 

 division north of the Brazos river " occupies the same position, 

 stratigraphically, as the Albany beds on the south." 6 Later Pro- 

 fessor Cummins proved the correctness of the latter supposition 

 and stated that he " found the fact well established that the 

 Wichita and the Alban}^ divisions were the same in time of depo- 

 sition, and therefore the Albany must be abandoned both as to 

 its name and the age to which I had previously referred it, and 



1 Trans. Kan. Acad. Sci., Vo XIII, 1893, p. 38. 



"Trans. Texas Acad. Sci., Vol. II, 1897, pp. 97, 98. Also see D. W. Johnson, 

 in Bull. Sci. Lab. Denison Univ., Vol. XI, 1900, p. 223. 



3 Geol. Surv. Texas, Second Ann. Rept, 1891, pp. 361, 373. Fourth ibid., 1893, 

 pp. 224-32. 



4 Prof. Hill has shown that the Albany division of Cummins is the same as the 

 one named and described at an earlier date by Prof. Tarr as the Coleman. Twenty - 

 first Ann. Rept. U. S. Geol. Surv., Pt. VII, 1902, pp. 96, 97). 



$Ibid., p. 224. 6 Ibid., p. 223. 



