Paisley Cave coprolite DNA and pre-Clovis publication dispute

Record summary

The publication of genetic and radiocarbon work on Paisley Caves coprolites generated debate about whether human DNA, rather than merely morphologically identified coprolites, could securely demonstrate an early North American presence. The lead is distinct from the general site because it focuses on laboratory evidence, contamination controls, and the relationship between genetic signatures and archaeological layers. It matters for comparison with other pre-Clovis claims. Uncertainties include preservation, contamination, sample association, and whether laboratory results establish a wider settlement chronology.