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. 2025 Jun 18;12(6):250435. doi: 10.1098/rsos.250435

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© 2025 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Photographs (left side of panels) and rendered CT scans (right side of panels) of the right jugal UMNH VP 16266 — Photographs (left side of panels) and rendered CT scans (right side of panels) of the right jugal UMNH VP 16266.2 (Bolg amondol). (A) Lateral view. (B) Magnified view of osteoderms on postorbital process. (C) Dorsal view. (D) Medial view. (E) Anterior view. (F) Ventral view. (G) Magnified dorsomedial view, illustrating attachment of osteoderms to the postorbital process. (H) Posterior view. (I) Inferred placement of the element in a schematic reconstruction of the skull of Bolg amondol. Anatomical abbreviations: frm, foramen; mr, medial ridge; ost, osteoderms; perio, periosteum; popr, basal portion of postorbital process; pvpr, posteroventral process.