PRossER.| Cretaceous. —Comanche Series of Kansas. 1038 
the Fredericksburg shale and No. 6 of the Belvidere with the 
Trinity sandstone of Texas. He further said: “The paleontologic 
and lithologic identity of No. 5 of my Belvidere section with a 
certain, shell-conglomerate occurring at Weatherford—the lowest 
Gryphaea-bearing horizon of Texas—is such as to warrant me in 
asserting the essential chronologic equivalency of the two hori- 
zons.”! 
Williston, 1892.—The small geologic map prepared by Professor 
Williston is the first one to represent approximately the geological 
formations south of the Arkansas river as they are now defined. 
Beginning with the lower Professor Williston indicates the follow- 
ing terranes for this portion of the state: On the eastern side to the 
west of the Arkansas river, upper Carboniferous and Permian; thin 
Triassic followed by a band of Comanche Cretaceous, the greater 
part of the region north and west of this being covered by Loup 
Pork Tertiary, with a small deposit of Niobrara Cretaceous in the 
northern part of Meade, southeastern corner of Gray, and south- 
western corner of Ford counties; south of the Great Bend of the 
Arkansas river, parts of Edwards, Stafford and Reno counties are 
represented as covered by the Dakota Cretaceous. ‘The area of the 
outcrops of the Comanche Cretaceous is represented as beginning 
in the southwestern part of Kingman county, extending westerly 
across the northern part of Barber into the southeastern corner of 
Kiowa, whence it makes a turn running southeasterly into the west- 
ern part of Barber thence in an irregular line westerly, southwest- 
erly and northerly across Comanche county into the southwestern 
corner of Kiowa and thence to the southwest diagonally across 
Clark county into the southeastern corner of Meade county. In 
general the line between the Cretaceous and Triassic is represented 
as extending southwest from Reno county across Kingman, Pratt, 
3arber, Comanche and Clark counties to the state line. 
Hay, 1893.—On the “Geological and Topographical Map of Kan- 
sas” accompanying Professor Hay’s “Geology and Mineral Re- 
sources of Kansas’ the approximate eastern boundary of the Cre- 
taceous formations is represented as extending in general south- 
1 Ibid., p. 180. 
a8 ane Hay, Highth Biennial Report Kansas State Board of Agriculture, pp. 
