Fourteen fossilized coprolites found at Oregon's Paisley Caves were confirmed by DNA analysis to be human, with radiocarbon dating indicating they were left between 14,000 and 14,270 years ago.
Sources
- The First Americans - Smithsonian Magazine (smithsonianmag.com)
- https://www.researchgate.net/publication/5464810_DNA_from_Pre-Clovis_Human_Coprolites_in_Oregon_North_America (researchgate.net)
- https://sciencedirect.com/science/article/pii/S0012825220302427?via=ihub%3D (sciencedirect.com)
- https://www.tandfonline.com/doi/full/10.1080/20555563.2017.1396167 (tandfonline.com)
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