Ancient bison bones discovered at Ayer Pond on Orcas Island, Washington, were radiocarbon-dated to about 13,800 years ago.
Notes on verification
Multiple independent sources, including peer-reviewed literature (Kenady et al., Quaternary International) and archaeological commentary, corroborate radiocarbon dating of bison bones from Ayer Pond, consistent with a calibrated age of ~13,800-13,900 calendar years ago. [tier=gold indep_score=0.867 clusters=3 claim_tier=notable]
Sources
- The First Americans - Smithsonian Magazine (seed:history_and_archaeology)
- https://qmackie.com/2010/04/24/orcas-bison/ (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S1040618210001369 (corroboration)
- https://islandhistories.com/items/show/22 (corroboration)