Even without the specific genetic sequencing that would reveal the full genomic picture of the Texas Archaic populations, the bones themselves yield significant scientific information through techniques that do not require DNA.

Stable isotope analysis — the measurement of ratios of different stable forms of carbon, nitrogen, and other elements — has been applied to both the Bering Sinkhole and Buckeye Knoll populations.

The technique works because different food sources leave distinctive chemical signatures in the bone collagen of the people who eat them.

Marine protein has a different isotopic signature than freshwater protein, which differs from terrestrial protein, which differs from plant foods.

The results from the Texas sites revealed dietary patterns that changed over time.