You may be older than I thought. I looked up Clovis on Wikipedia and found this: The Clovis culture appears around 11,500 RCYBP (radiocarbon years before present[2]), at the end of the last glacial period, characterized by the manufacture of "Clovis points" and distinctive bone and ivory tools. Archaeologists' most precise determinations at present suggest that this radiocarbon age is equal to roughly 13,500 to 13,000 calendar years ago.