Fig. 1.

PCA scatterplots of PC1 vs. PC2 for MT1–MT4 morphospaces. MT1, most hominins are more ape-like in morphology (except H. naledi); MT2, most hominins are modern human-like; MT3, most hominins are modern human-like except Au. afarensis, but this may be due to taphonomy (see main text) (note that the Ar. ramidus MT3 appears more modern human-like than does its corresponding MT1); MT4, the results are similar to MT3. C. browni, Catopithecus browni; E. vindobonensis, Epipliopithecus vindobonensis; PCA, principal component analysis.