Aboriginal skulls are oval and elongated from front. Caucasian skulls are narrow and elongated. Aboriginal cheekbones are highly pronounced. Caucasian cheekbones are less pronounced. Aboriginal chins are weak and receding. Caucasian chins are prominent and protruding. Aboriginal eye orbits are large and angular relative to face. Caucasian eye orbits are smaller and rectangular relative to face. Aboriginal brow ridges are massively pronounced especially in males. Caucasian brow ridges are moderately pronounced. Aboriginal nasal openings are narrow but flared wider at bottom. Caucasian nasal openings form triangle without flare. Aboriginal nasal bridge is flat and unpronounced. Caucasian nasal bridge is protruding and obvious. Aboriginal teeth are large and widely spaced. Caucasian teeth are small and closely spaced. Aboriginal skulls show greater historical alveolar bone loss. Caucasian skulls show less alveolar bone loss. Aboriginal temporal fossa is poorly filled especially in males. Aboriginal occipital bone bulges prominently. Post-orbital constriction is evident in Aboriginal skulls.