Posterior vs. intermediate vs. anterior/central
Posterior
Central
Degree of projection of mid to lower facial region (around maxilla)
Significant projection, Moderate projection, Mild projection, No projection
Significant projection
No projection
Bony protuberance above the eyes; thickness and protrusion
Significant, moderate, mild, none
Significant
None
Degree of ‘pinching in’ of cranium behind orbits
Significant, moderate, mild, none
Significant
None
Midface area is concave, i.e. cheeks extend further forward than does the nose. Face looks like a ‘dish,’ face (including cheeks) visible from superior view of crania
Present, absent
Present
Absent
Zygomatic arches (cheekbones) extend laterally (very wide) and inferiorly (large surface area)
Present, absent
Present
Absent
Ridge of bone that projects upward along the top of the cranium; looks like a mohawk made of bone
Present, absent
Present
Absent
Sloping, vertical
Sloping
Vertical
Chimpanzee: Approximately 400 cc
Human: Approximately 1,400 cc
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