Nature 500, 199–202 (2013); doi:10.1038/nature12353

In Fig. 2a of this Letter the tooth P3 should be horizontally flipped, as shown in Fig. 1 of this Corrigendum. We thank Z-X. Luo, T. Martin and C-F. Zhou for pointing out the error.

Figure 1
figure 1

Tooth P3, flipped horizontally.