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. 2013 Oct 14;8(10):e76070. doi: 10.1371/journal.pone.0076070

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© 2013 Kimura 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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Ma to each species, using 10 principal components. The percentage on the top of the ordinate axis is expressed as a percentage of morphological change as A. chinjiensis at 13.8 Ma is set to be 0%, and P. robertsi is set to be 100%. Symbols as in Figure 2. Combined ages: 13.7 to 13.6 Ma for A. chinjiensis at 13.6 Ma, 13.2 to 12.8 Ma for A. chinjiensis at 13.0 Ma, 11.6 to 11.2 Ma for P. hussaini, 10.5 to 10.1 Ma for Progonomys sp. at 10.5 Ma, 9.4 to 9.0 Ma for K. darwini, 9.2 to 9.0 Ma for P. debruijni, 8.0 to 7.1 Ma for Parapelomys sp. at 7.2 Ma.