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. 2012 Feb 3;7(2):e31295. doi: 10.1371/journal.pone.0031295

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Phil R. Bell.

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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(A, B) Saurolophus osborni (AMNH 5220) right dentary. (C, D) Juvenile S. angustirostris (ZPAL-MgD-1/159). Itf, infratemporal fenestra; Ju, jugal; Q, quadrate. Grey areas denote regions of skin impressions.