Table S4.

Eigenvectors corresponding to the PCA of endocranial shape data

Variable	PC1	PC2	PC3	PC4	PC5	PC6	PC7
FW	−0.511	0.079	−0.664	0.377	0.099	−0.022	0.077
HLC	−0.465	−0.361	0.152	0.179	−0.127	0.650	−0.076
HLD	0.490	−0.700	−0.419	−0.080	0.189	0.190	−0.023
MW	−0.385	−0.413	−0.131	−0.340	−0.088	−0.608	0.163
VT	−0.070	0.224	−0.287	−0.714	−0.369	0.379	0.230
BAC	−0.108	−0.263	0.427	0.065	0.053	0.025	0.726
MCW	−0.322	−0.211	0.279	−0.335	0.156	−0.040	−0.597
BB	−0.120	0.196	−0.022	−0.279	0.876	0.160	0.161

BAC, biasterionic chord; BB, basion-bregma distance; FW, frontal width at Broca's cap; HLC, hemispheric length chord; HLD, hemispheric length dorsal arch; MCW, maximum cerebellar width; MW, maximum endocranial width; VT, vertex-lowest temporal distance.