A cave in Oregon produced fossilized human excrement that was identified through DNA analysis and dated using accelerator mass spectrometry, providing evidence of pre-Clovis inhabitants.
Notes on verification
Confirmed by peer-reviewed studies in Science and Science Advances, plus university press releases and follow-up independent lab verification of DNA dating to ~14,300 years ago, pre-dating Clovis culture. [cascade flags: aggregator_dropped_primary_exists | tier=silver indep_score=0.95 clusters=3 claim_tier=notable]
Sources
- The Clovis Point and the Discovery of America's First Culture (seed:history_and_archaeology)
- https://www.science.org/doi/10.1126/science.1218443 (corroboration)
- https://www.science.org/doi/10.1126/sciadv.aba6404 (corroboration)
- https://donsmaps.com/coproliteevidence.html (corroboration)
- https://news.uoregon.edu/content/paisley-caves-study-uncovers-new-scoop-ancient-poop (corroboration)