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
Sloping, vertical
Sloping
Vertical
Chimpanzee: Approximately 400 cc
Human: Approximately 1,400 cc
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