For those of you who don’t follow Paleoindian archaeology, this is the Cinmar biface…
Proponents of the Solutrean hypothesis argue that it was dredged up, along with with remains of a mammoth dated to 22,760 ± 90 RCYBP, off the mid-Atlantic coast. It’s on the cover of their book. If you have an academia.edu account, you can read about it in more analytical detail here.
With that being said, this article came out yesterday in Journal of Archaeological Science (it’s open access – so you don’t need a subscription).
After reading it, this was about what my reaction was like…