462 



THE AGE OF MAMMALS 



4. Fine dull-orange colored loam, upward of seventy-five feet in thickness, 



occasionally resembling loess. 

 3. Stratum of volcanic dust several feet in thickness, also seen at other 



localities, extending twelve miles across the trough. 

 2. Stratum of clay, not of great horizontal extent. 

 1. Gravel and sand containing ])oulders, clay, fragments of Cretaceous 



shales. Remains of Megalonyx, Equus. 



In the bottom of these fluviatile gravels a skull of Megalonyx leidyi was 

 discovered by Lindahl, as well as remains of Equus. If Megalonyx was a 



Fig. 201.- 



■Skeleton of the Lower Pleistocene peccary Platygonus leptorhiniis. 

 American Museum of Natural History. 



In the 



forest-dweller, this discovery affords some evidence that it followed the 

 river-border forest lines into Kansas in early Pleistocene times, also that it 

 was capable of withstanding considerable cold. The study of the region 

 and the deposits shows that the making of the gravel and sand was coin- 

 cident with a period of increasing humidity; also that ice-flooding may have 

 been present as an effective transporting agency. 



Goodland, ShermanCounty, Ka7isas.—^ln 1894 a most interesting discov- 

 ery was recorded by Williston at Goodland, north of Fort Wallace, in the 

 extreme western part of the state.^ Nine specimens of the large peccary 



1 Williston, S. W., Restoration of Platygonus. Kansas Univ. Quart., Vol. Ill, 1894, pp. 

 23-39. 



