The first human skeleton found in Oklahoma is estimated to be 9,000 years old. Based on this age, which dates the skeleton to about 7,000 BCE, the skeleton is most likely from the __________.

A date of about 7,000 BCE falls within the Archaic period, which followed the earlier Clovis and Folsom cultures. The Plains Woodland culture developed much later, so the skeleton is most likely from the Archaic culture.

AI-written and checked against the verified answer.