122 TJie American Geologist. Feb. i89i 
mens of Gryphaea pitcheri Morton were collected and sent to Dr. 
Morton, and old Fort Washita, in Indian Territory, where Mr. 
Jules Marcou made his observations, and all the localities men- 
tioned by Drs. G. G. and Benj. F. Shumard. An interesting 
result of these labors was a complete study of the stratigraphj- of 
the Dakota sandstones which were first recognized by Dr. B. F. 
Shumard in 1860, from fossil leaves at Denison, Texas.* These 
beds, I found, have a grand development from a few miles east of 
Gainesville nearty 200 miles east into Arkansas, where they out- 
crop in a single locality in the bed of Little river, as described but 
not identified on p. 182 of my report on the Neozoic geolog}' of 
southwest Arkansas. Bed river flows in the strike of these beds 
all the way from seven miles east of Denison, Texas, to the old 
Paris Fort, Towin Feriy, grand exposures being seen beneath the 
river alluvium and Quaternary beds in all the bluffs. At Arthur's 
ferry, where the St. Louis and San Francisco road crosses Bed 
river are magnificent plant beds abounding in innumerable indi- 
viduals of all the typical Dakota dicotyledonous leaves. In addi- 
tion to this flora, there are interesting occurrences of molluscs 
(which are rare in the northeastern United States), which will give 
great light on the paleontology of the Dakota sandstone. The 
relation of these beds to the shallow and somewhat similar litho- 
logic beds of the uppermost Lower Cretaceous is clearly uncon- 
formable, although casual observation would no doubt lead to 
their confusion. This tongue-like extension of the Dakota, east- 
ward, clearly is all south of the Wachita mountains, and gives 
new light on our Cretaceous history. 
MEGALONYX IN HOLMES COUNTY, OHIO, 1890. 
By E. W. Claypole, Akron, 0. 
I. 
About the end of December, 1890, there appeared in a local 
paper, the " Millersburg Farmer," a notice of the discovery of 
some large fossil bones in a swamp near that town. Supposing 
that they belonged to the Mastodon whose skeleton is frequently 
found in an imperfect condition in the swamps of the state, I 
*Trans. Acad. Sci., St. Louis, Vol. II, p. 152, 1861. 
