What is the significance of the cooper bison skull?

The correct answer is that the Cooper Bison Skull turns out to be the oldest painted object ever found in Noth America in 1994 by Dr. Lee Bement.

Explanation:

The Cooper Bison Skull was found in the Cooper Bison Kill Site, which is an archeological area near Fort Supply, in Oklahoma. It is believed by the archeologists that this artifact was the oldest painted object ever and that it belonged to bison that were haunted by hunters with arrows and more near an arroyo, because arrowheads were also found in the site of the discovery. In addition, the site has been dated to 10,900-10,200 years ago, therefore making it one of the oldest places in the american archeological history ever found.