Researchers find oldest bone weapon in the Americas - study
Researchers used a CT scan and 3D software to isolate bone fragments that were embedded in the rib of a mastodon.
Male and female American mastodon (Mammut americanum) skeletons(photo credit: WOLFMANSF/CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)/VIA WIKIMEDIA COMMONS)
