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. 2016 Jan 4;11(1):e0145805. doi: 10.1371/journal.pone.0145805

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© 2016 Campbell 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 12 — Thinning of lateral bar (character 16), articulation (character 17) and reorientation (character 18) of epiparietals (character 18): (A) CMN 1254, (B) AMNH 5656, (C) TMP 1983.025.0001, and (D) CMN 2280 (flipped). Blank triangles = unadorned epiparietal loci; solid triangles = articulated epiparietals; long triangles = epiparietals (or loci) oriented posteriorly in the plane of the frill, and short triangles = epiparietals oriented anterodorsally. Lines represent extent of lateral bars. Chasmosaurus russelli (inverted triangles) and Chasmosaurus sp. (diamond). [planned for column width].