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. 2019 Aug 7;14(8):e0218791. doi: 10.1371/journal.pone.0218791

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© 2019 Wallace 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 credited.

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Fig 28 — (A) Occlusal, (B) buccal, (C) lingual, and (D) cross sectional views. The eighth postcanine on the right side of the skull best illustrates the cusp pattern of the distal postcanines. Three main cusps are in alignment with the longitudinal axis of the crown (A, B, C). Three accessory cusps surround the most-distal main cusp buccally (D), distally (E), and lingually (F). A small bump appears on the surface of the crown in the volume rendering (*). Cross sections confirm that it is not a cusp, but an artifact from denser material.