ProssEeR.|  Cretaceous.—Comanche Series of Kansas. Ils} 
excellent photograph is given of this rock from the western side 
—Plate X VI—but its massive form and varied colors ‘can only be 
appreciated when seen in the bright sunshine of the early morning. 
The fossils of the Cheyenne consist entirely of plants, with the 
exception of some shells found by Mr. Beede and the writer in a 
sandstone referred to the Cheyenne occurring north and south of 
Avilla. 
Fossil wood is common in various localities. In the upper part 
of the sandstone Hill found the dicotyledonous flora which accord- 
ing to Professor Knowlton consists of the following species: 
Rhus Uddenr Ux. 
Sterculia Snowii Lx. 
Sassafras Mudge: Lx. 
Sassafras cretaceum Newby., var. obtusum Lx. 
Sassafras i. sp. 
Glyptostrobus gracillimus Lx. 
Sequoia sp.;1 
to which perhaps should be added the cycad described by Professor 
Cragin in 1889 under the name of Cycadoidea munita?. As has 
already been mentioned, Professor Knowlton states that up to the 
present time the dicotyledons identified from the Cheyenne sand- 
stone are not known outside of the Dakota formation. 
In October 1896, Professor Lester F. Ward of the U. 8. Geological 
Survey studied some of the exposures of the Cheyenne sandstone in 
Comanche and Barber counties. Judging from the published re- 
port of his paper before the Philosophical Society of Washington, 
Professor Ward considers the Cheyenne flora to belong in rocks of 
Lower Cretaceous-Comanche age instead of Dakota. The secretary 
of the society reported Professor Ward as follows: Fossil plants 
were obtained at three different horizons, showing corresponding 
changes in the flora. So far as they go they confirm Mr. Hill’s con- 
clusion that at least the upper part of the Cheyenne sandstone be- 
longs to the Washita Division of the Comanche Series. It may be 
1 American Journal Science, 3d Series, Vol. L, p. 212, which is copied by Professor 
Cragin in American Geologist, Vol. XVI, p. 367. 
2F. W.Cragin, Bulletin Washburn College Laboratory Natural History, Vo) 
IDL, jo, (BO, 
—8 
