Butchered ribs (IMAGE) University of Texas at Austin Caption A CT scan of a mammoth rib showing a puncture wound. At the start of the video, the wound appears as a circular indention on the left side of the rib. Credit Credit: University of Texas High-Resolution X-ray Computed Tomography Facility. Usage Restrictions Butchering marks on mammoth ribs. The top rib shows a fracture from blunt force impact; the middle rib shows a puncture wound, probably made by a tool; the bottom rib shows chopping marks. Credit: Timothy Rowe et al. / The University of Texas at Austin. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.