They push the documented human presence in the Guadalupe River corridor and the Edwards Plateau well back into the early Holocene.

But they are not the beginning of the Texas story.

The Gault site, in Bell County in central Texas, has produced evidence of human occupation dating to at least 16,000 years ago, and possibly earlier.

Pre-Clovis artifacts — stone tools made before the distinctive Clovis fluted-point technology appears — have been recovered from stratified contexts at Gault that radiocarbon dating has placed at 16,000 to 20,000 years before present.

This evidence pushes the initial human presence in Texas back more than twice as far as the Early Archaic burials of Buckeye Knoll.