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. 2014 Jan 28;9(1):e87236. doi: 10.1371/journal.pone.0087236

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© 2014 Evans 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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A, anterior; B, posterior; C, dorsal; and D, right lateral views. Vertebra B interpreted as possible fifth or sixth presacral vertebra and placed in fifth presacral position for digital reconstruction in Figs 1, 2, 5, and 32.