500 University of Kansas Geological Survey. 
least the one of which we have most knowledge, in the Quaternary 
deposits of the state, and is the most widely distributed, and the con- 
clusion is, hence, that the Equus beds are the prevailing superficial 
deposits of the state, a conclusion borne out by the other vertebrate 
fossils that are known. That all the forms given below were con. 
temporaneous, 1s of course not yet proven, but I believe that they 
were. 
Cragin, in a recent paper! has given a preliminary notice of three 
terranes in Clark county, which he wrongly ascribes to the late — 
Pliocene. The lithological characters of these terranes are of course 
nearly worthless save for local use, and he has not yet given a critieal 
list of the vertebrate fossils contained in them. The lowermost of 
these, which he calls the Meade gravels, contained ‘‘abundant re- 
mains of horses, llamas, elephants, turtles, etc.,” some of which are 
“Elephas imperator (?), Megalonyx leidyi, Equus complicatus, E. 
curvidens, Auchenia huerfanensis, etc.” Lying upon this terrane 
are the volcanic ash beds, which he calls the *“‘Pearlette Beds,” and 
upon the ash beds are the “Kingsdown Maris, consisting of yellow- 
ish brown, lacustrine or slack-water marls containing variously 
Shaped concretions of carbonate or silicate of lime.” This latter 
included Elephas, and reached a thickness of one hundred feet in 
Clark county, and has “more than twice that thickness at certain 
localities on divides further west.” All these terranes he locates 
in the Equus beds of Cope. It seems to me that further and careful 
study of the fossils is desirable before we assume as certain that 
the late Pleistocene in Kansas reached the great thickness of over 
two hundred and fifty feet. 
The following list includes all the species of vertebrate fossils 
found in the Kansas Pleistocene, of which I have any knowledge: 
| Homo sapiens. 
Mastodon americanus. 
Klephas primigenius. 
K. imperator (?). [Cragin.] 
Bison americanus. 
Bison antiquus. 
B. crampianus. 
1 Colorado College Studies, Vol. VI, p. 53. 
