Permian Formations ot Kansas — Prosser. 
147 
fined by their respective authors is the same. This is not 
changed by the fact that in my paper of 1902 the* Neosho 
shales were made the upper division of the Missourian 
rather than the lower division of the Big Blue series. 
Dr. Keyes in 1903 clearly states that the top of the Ok- 
lahoman series is marked by the top of the Marion lime- 
stones and apparently states that the inclusion of the Well- 
ington shales in it in November, 1901, was due to a typo- 
graphical error. § The paper just cited gave no evidence of 
such error and at the time of the publication of my classifi- 
cation in 1902 Dr. Keyes had made no statement which 
clearly indicated such error. The paper cited as the one 
in which Dr. Keyes "particularly emphasized" this line is 
apparently the one on the "American homotaxial equiva- 
lents of the original Permian."* In this article there are 
two portions which bear upon the point in question. First, 
Dr. Keyes gave a table entitled "Comparison of general 
sections" in Russia and the Mississippi valley which is as 
follows for the upper Paleozoic rocks : 
Russia. 
Character of Terranes. 
Mississippi Valley. 
Tartaran, 
Permo-Trias, or 
Upper Permian, 
P 3 
Shales and marls, red and va- 
riegated, shaly sandstones; 
fossils rare; "Red Beds." 
Cimarron Series. 
Middle 
Permian, P-. . . . 
Lower 
Permian pl — b . . 
Upper Permo- 
Carboniferous 
(base of original 
Permian) C Pc. 
Limestones, some dolomltic, 
separated by calcareous marl 
Shales (only 200 feet thick in 
Kama Valley.) 
Limestone, heavy dolomitic. 
(Marion li.) 
• 
(Chase li.) 
L I 
r d 
90 
Artinsk, C P 
Shales, sandstones, some thin 
limestones. 
(Neosho) ) m 
(Cottonwood) - g. 
1 Wabaunsee) ) ? 
Upper Carboni- 
ferous, C 3 
Limestones and shales, highly 
fossiliferous. 
Missourian Series. 
5 Am. Geol., vol. xxviii, p. 302. 
* Jour. Geol., vol. vii, 3899, pp. 321-342. 
* Ibid., p. 332. 
