. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. PLEISTOCENE OF EUROPE, NORTH AFRICA, AND NORTH AMERICA 463 .Platijgonus (compressus) leptorhinus were found lying close together as though a hertl of the animals had been overcome by some sudden catastrophe. They lay about nine feet below the surface, with heads directed toward the southwest, the heads of the hinder lying upon the posterior parts of the more anterior ones, and the bones all or nearly all in the position they had been at the time of the animals' death. This crowding together would in- dicate
. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. PLEISTOCENE OF EUROPE, NORTH AFRICA, AND NORTH AMERICA 463 .Platijgonus (compressus) leptorhinus were found lying close together as though a hertl of the animals had been overcome by some sudden catastrophe. They lay about nine feet below the surface, with heads directed toward the southwest, the heads of the hinder lying upon the posterior parts of the more anterior ones, and the bones all or nearly all in the position they had been at the time of the animals' death. This crowding together would in- dicate that the animals were overtaken either by a dust storm, a snowstorm, or a blizzard, just as herds of sheep are found at the present time. ^Sternberg's elephant bed,' also in Logan County, Kansas, contains numerous remains of the Columbian mammoth {E. columbi), a large species of wolf {Conis), as well as a smaller canid of about the size of a Fig. 202. — The Lower Pleistocene peccaries of North America of the genus tlntygonus. After original by Charles R. Knight in the American Museum of Natural History. Twelve-mile Creek, Kansas (Fig. 194, 20). — On this tributary of the Smoky Hill River has been discovered the richest deposit of the Pleistocene of Kansas. In the blue-gray layers directly underlying the recent plains layers are recorded remains of several species of mammals, including Elephas columbi, Platijgonus compressus, Bison occidentalis. The stratum contain- ing the bison was about two feet in thickness and composed of fine silty material of bluish-gray color. The bone bed when cleared off was about ten feet square, and contained the skeletons of five or six adult bison, of two or three younger ones, together with a foetal skeleton within the pelvis of one of the adults.^ The animals evidently all perished together. In ' Williston, S. W., On the Occurrence of an Arrow-Head with Bones of an Extinct Bison. Trans. Internal. Congr. Americanists, 1902, pp. 335-33
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