Late Quaternary Bison Population Changes On The Southern Plains

An analysis of faunal lists from 160 archaeological and paleontological sites in the Southern Plains reveals a success of long-term periods of presence and absence of the genus Bison in the region. Two absence periods are from about 6000-5000 B.C. to 2500 B.C. and A.D. 500 to A.D. 1200-1300. These long-term changes seem to indicate a combination of fluctuating bison population densities and range shifts. Certain previously documented prehistoric cultural events in particular subareas ofthe Southern Plains vicinity are examined in light of these data.