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. 2011 Feb 16;6(2):e17026. doi: 10.1371/journal.pone.0017026

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Bello et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) cut-marks on frontal bone (GC3); (B) cut-marks on parietal GC 7(1.1/2); (C) cut-marks and percussion marks on temporal bone [GC 87 (8, 55)]; (D) cut-marks and percussion marks on occipital bone (GC2) (scale = 10 mm). (a–f), Alicona three-dimensional (3D) images of human modifications (scale = 1 mm). Arrows indicate percussion marks.