PRossEeR.| Cretaceous.—Comanche Series of Kansas. Lila 
from the shell-bed. In the remaining and by far the greater thick- 
ness of the formation are 51 species of invertebrates and 13 of ver- 
tebrates.* From the collections made by Professor Hill and Mr. C. N. 
Gould at the Black Hills and Blue Cut Mound, Mr. Stanton identified 
either specifically or generically 31 forms. All the geologists who 
have studied this formation in recent years are agreed in referring 
it to the Comanche series of Texas, though there is a slight differ- 
ence of opinion as to which division of the series it is most nearly 
related. Mr. Stanton thinks that “taken altogether, the evidence 
seems to indicate about the horizon of the Kiamitia’’? which are the 
lewest beds of the Washita division of the Comanche. Professor 
Hill agrees with this conclusion saying, “I fully agree with him 
[Mr. Stanton] that the Belvidere beds represent in general the 
Washita division and probably the attenuated Fredericksburg as 
seen in the North Texas section.” 
While Professor Cragin believes that the Kiowa of Kansas and 
Kiamitia of the southern part of the Indian Territory with some 
other beds should be united to form another division of the Comanche 
series, for which he proposed the name Kiowa and which “represent 
a group of sediments intermediate between the Fredericksburg and 
the Washita divisions.”® Finally, in answer to a ietter regarding the 
classification of these formations, Professor Hill under date of De- 
cember 7, 1896, kindly wrote me as follows: “I think if you will 
use the term Cheyenne sandstone and Kiowa shales of the Washita 
Division of the Comanche series you will not be far from right.” 
This was illustrated by the following diagram: 
\ Divisions. For Kansas. 
M 
® 
a ! Belvidere Kiowa. 
a |) Wetelaunces | Beds. MGR 
a 
© 
: 
: Fredericksburg. 
S \ Trinity. 
1 Ibid., pp. 369, 372, 373. 
2 American Journal Science, 8d series, vol. L, p. 219. 
3 Ibid., pp. 217, 218. 
ZL Wownel, 1D PREY 
5 F. W. Cragin, American Geology, vol. XVI, pp. 383, 385. 
