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. 2009 Feb 4;4(2):e4366. doi: 10.1371/journal.pone.0004366

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Gingerich 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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Skull in ventral view (A) with interpretive shading and labels (B). Shaded components include skull bones (grey), teeth (brown), hyoids (orange), and postcranial bones (red). Osteological abbreviations: Ba., basihyal; Basicr., basicranium; C, cervical vertebra; Dent., dentary; Exoc., exoccipital; Jug., jugal; L, left; Max., maxilla; R, right, rib; Scap., scapula; Squ., squamosal; St., stylohyal; Stern., sternebrum; T, thoracic vertebra; Th., thyrohyal; Tym., tympanic.