The 13,900-Year-Old Mastodon Rib Found With A Bone Point Still Inside — And The CT Scan That Put Hunters Before Clovis
This is actually, in some respects, a more powerful kind of evidence than general site evidence.
The objection that can be raised against sites with only stone tools — that the artifacts might have been moved by water or geological processes into their apparent association with datable material — does not apply to the Manis rib.
The embedded fragments are physically inside the mastodon bone.
They cannot have been introduced by water or sediment movement into their current position without destroying the geometry of the penetration that the CT imaging so clearly shows.
The evidence is where it is because it was put there in a single, violent moment, and it stayed there.