The Manis mastodon was found with an embedded point of bone in its rib, suggested that an early hunter had speared the animal 13,800 years ago.
The embedded point is at the top left of the mammoth rib.
Bone in Bone
High-tech CT scans show the point embedded in the mammoth's rib bone.
The projectile point was made of the bone of another mastodon. Here is a top view of the rib with embedded point.
A three-dimensional reconstruction of the entry site on the bone. The projectile point can be seen penetrating the bone surface.
This close-up view shows the projectile point entry area on the mammoth rib. The Manis mammoth was old and likely close to death when human hunters took it down.
Stephanie Pappas, Live Science Contributor
Stephanie Pappas is a contributing writer for Live Science. She covers the world of human and animal behavior, as well as paleontology and other science topics. Stephanie has a Bachelor of Arts in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz. She has ducked under a glacier in Switzerland and poked hot lava with a stick in Hawaii. Stephanie hails from East Tennessee, the global center for salamander diversity. Follow Stephanie on Google+.