Lower Cretaceous of Kansas. — Gould. 21 
good photograph taken one hundred yards east of the base of 
my section by professor Prosser very graphically illustrf.tes 
the cross-bedding of the sandstone.* 
A study of these sections would seem to indicate that the 
division of the upper part of the Cheyenne into distinct 
horizons is not possible. The Corral may usually be differ- 
entiated from the overlying rocks, but in many places even 
this can not be done. If any additional name is needed it 
would be better to use professor Cragin's, Elk-Creek beds.t 
The Cheyenne as a whole is a clearly defined geological 
unit being nearly as sharply set off from the superjacent Kiowa 
as from the subjacent Red-beds. 
2. Fossils. 
The first fossils found in the Cheyenne sandstone were 
silicified logs discovered by professor Cragin and mentioned 
by him in 1890. + In 1893 he discovered near Belvidere foliage 
of Glyptostrobus gracillimus.§ As stated above, professor Hill 
in 1894 discovered an abundant dicotyledenous flora near the 
Black hill. The plants which were for the most part poorly 
preserved came from the upper part of the Elk-creek beds and 
were found in a soft, yellowish-gray sandstone. They were 
identified by Dr. F. H. Knowlton of the Smithsonian Insti- 
tution as follows : 
Rhus uddeni Lx. 
Sterculia snowii Lx. 
Sassafras mudgei Lx. 
Sassafras cretaceum Lx. 
Sassafras, sp. nov. 
Glyptostrobus gracillimus Lx. 
Sequoia, sp. 
The collections of Dr. Lester F. Ward in 1896 and 1897 
have not yet been studied. The material comprises about fifty 
boxes containing numerous species of dicotyledons as well as 
ferns, conifers, etc. Concerning the collection Dr. Ward wrote 
me. February 6, 1899, "* * * j have never seen a speci- 
men of the Cheyenne sandstone collections since they were 
*Loc. cit., plate XVII, op. p. 136. 
tLoc. cit., p. 366. 
JBul. W. Col. Lab. Nat. Hist., vol. II, p. 71, 1890. 
§American Geologist, vol. XVI, p. 263, 1895. 
