The dates referring to the Paleo time period range from . 20,000 to 12,000 B.C.E. 12,000 to 8,000 B.C.E. 8,000 to 4,000 B.C.E. 24,000 to 20,000 B.C.E.

12000 to 8000 BCE

Explanation:

The Paleo period, or otherwise called, the Paleoindian Period is referring to a time approximately 12,000 years ago, at the end of the last ice age. This period being referred to, was when humans first started to appear in the archeological record in the Americas, precisely North America.

These Paleo people are also called, Paleo Americans, and they have been tagged as the first settlers to settle down in America. The name Paleo Indians also refers to the Lithic period.