CLASSIFICATION OF UPPER PALH&OZOIC ROCKS. 795 
it is stated: ‘It is still too early to attempt exact correlation, but 
it is quite probable that the Albany division of my Coal Meas- 
ures will prove to be the same as the beds at Fort Riley, Kansas.”’* 
Professor Cummins further said that the Phacoceras Dumbli, Hyatt 
which is found at Fort Riley, Kansas, came from ‘‘the very top 
of the Albany division in Texas . . . . and as the form is sup- 
posed to have but a short range in time it would go far to assist 
in correlating the strata.”? If Professor Cummins be correct in 
the above correlation, then it is probable that the Albany forma- 
tion ought to be correlated with the Permo-Carboniferous of 
Kansas.3 
In reviewing these reports Professor Marcou correlated the 
Albany division with the Nebraska City deposits of Nebraska, 
and the Cisco division he considered as related to the Platts- 
mouth group of Nebraska.t| While Professor Smith draws the 
line between the Coal Measures and the Permo-Carboniferous 
through the upper part of the Cisco formation, including in the 
Permo-Carboniferous the ‘“‘uppermost Cisco beds of Texas, with 
Ammonites (Popanoceras) Parkert, Heilprin,” which he correlates 
with the Artinsk stage. 
After reviewing all the published opinions regarding the cor- 
relations of the Upper Paleozoic of the United States and after 
a consideration of the fauna and the lithological and stratigraph- 
ical characters of these formations as exposed in Kansas, it seems 
well to classify them as indicated on the chart on p. 797. Con- 
sequently we would refer the Wabaunsee and Cottonwood forma- 
tions to the Upper Coal Measures. The Neosho and Chase 
formations are transitional from the Upper Coal Measures to the 
Permian, as first defined by Murchison for Russia, and belong to 
the division which has generally been called Permo-Carboniferous, 
in this country. In accordance with the views of the majority of 
*Ibid., p. 222. 
2 WSIGl, D> BBZ, 
3 Professor Cummins is not sure but that “the Wichita and Albany divisions are 
but different facies of the same formation” (ibid., p. 223). 
4Am. Geol. Vol. X., 1892, p. 369; see “Table of Classification” on pp. 376, 377. 
5JOURNAL GEOLOGY, Vol. II., 1894, p. 194; see “ Correlation Table” on p. 204. 
