However, even with the fragmentary evidence, archeologists
deduced there were at least two bison killed at Perry Ranch.
The spearpoints found on the site were made of a special
kind of chert known as Alibates. It flakes in a uniform and
predictable manner which made it highly desirable for prehistoric
tool-makers. This Alibates may have been collected at a quarry
in the Texas panhandle about 150 miles away.
A small sample of the bone was radiocarbon-dated and returned
a date of about 7,000 years ago. Recent advances in dating
techniques, however, allowed archeologists at the University
of Oklahoma to re-submit another small sample and this date,
which is believed to be more accurate, shows the bison at
the Perry Ranch site were hunted and killed 9,600 years ago.
The spearpoints, shown at right, are similar in style to
points found from the same time period throughout the Southern
Plains. They are called Plainview points.
Plainview Points from the Perry Ranch Site