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Figure 6
Anthropogenically modified shark tooth CAM-0199 from Camboinhas Sambaqui, Niterói, Rio de Janeiro. (a) Three-dimensional reconstruction of the tooth, revealing the central perforation. (b) Close-up of the 3D reconstruction in panel (a), highlighting cracks inherent to the perforation. (c) Coronal section showing the junction between the central perforation and the natural hollow internal structure of the tooth. (d) Three-dimensional reconstruction displaying the hollow internal structure. (e) Coronal section of the tooth displaying the hollow internal structure. [Scale bars: (a), (c), (d) and (e) 1 mm, and (b) 0.25 mm.]

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 1| January 2026| Pages 170-180
https://doi.org/10.1107/S1600577525009993
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