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. 2014 Apr 11;9(4):e94720. doi: 10.1371/journal.pone.0094720

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© 2014 The PLOS ONE Staff

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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Caudal vertebra in dorsal (A), anterior (B), left lateral (C), posterior (D), anterodorsal (E), ventral (F) views and sagittal section (G); atlas intercentrum in ventral (H), anterior (I), dorsal (J), right lateral (K) views; left atlas neural arch in dorsal (L), medial (M), left lateral (N) views. af, articular facet; atp, atlas intercentrum transverse process; cn, neural canal; dec, dorsal excavation on the centrum; exoccf, exoccipital facet; of, odontoid facet; ped, pedicle; poz, postzygapophysis; prz, prezygapophysis; sp, spinous process; tp, transverse process; vc, vertebral centrum.