|A photo and sketch depict the scatter of ancient butchered bison bones, dated to about 11,500 years old. (Photo courtesy Carlson et al., PaleoAmerica)|
June 8. A stretch of floodplain in northwestern Oklahoma, already known for its profusion of prehistoric hunting sites, has turned up new find: a scatter of butchered bison bones dating back nearly 11,500 years — extending the evidence of bison hunting in the area by centuries, archaeologists say.
The find includes nearly three dozen pieces of leg, foot, and back bones from ancient bison, and two stone tools: a quartzite hammerstone and a small, sharp flake fashioned from Texas chert. [...] westerndigs.org