Some bones appeared to show signs of butchery — marks consistent with the removal of meat or processing of the carcass.

But the analysis of butchery marks on bone is a technically demanding endeavor that requires distinguishing between marks made by stone tools and marks made by natural processes — animal gnawing, trampling, sediment compaction — that can produce superficially similar surface textures.

The Waters team’s analysis examined some of these potential butchery marks, but the conclusions have been more cautious than the conclusions about the embedded rib fragment: the butchery evidence at Manis is suggestive but has been less definitively established than the projectile point evidence.

There was also evidence of other fauna at the site.