
The Manis site mastodon rib with embedded point to the left.
Dr. Michael Waters, distinguished professor of anthropology and director of Texas A&M's Center for the Study of First Americans, led the team whose findings were published this week in Science Advances.
The team studied bone fragments embedded in a mastodon rib bone which was first discovered by Carl Gustafson, who conducted an excavation at the Manis site in Washington state from 1977 to 1979.
Using a CT scan and 3D software, Waters and his team isolated all the bone fragments to show it was the tip of a weapon — a projectile made from the bone of Mastodon, prehistoric relatives of elephants.
"We isolated the bone fragments, printed them out and assembled them," Waters said. "This clearly showed this was the tip of a bone projectile point. This is this the oldest bone projectile point in the Americas and represents the oldest direct evidence of mastodon hunting in the Americas."
Waters said at 13,900 years old, the Manis point is 900 years older than projectile points found to be associated with the Clovis people, whose stone tools he has also studied. Dating from 13,050 to 12,750 years ago, Clovis spear points have been found in Texas and several other sites across the country.
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