Anatomy and Physiology: Skull and Bone Differences Based on Gender and Race

male and female skull differences (this picture was taken from: http://squinting-at-bones.blogspot.com/2011_07_01_archive.html)

Gender
Male skulls have a robust occipital protuberance, larger and more downward protruding mastoid process, zygomatic ridge extends beyond external auditory meatus, larger more distinct temporal line, and pronounced superciliary arches.

Female Skulls have vertical and rounded frontal, zygomatic doesn't extend beyond external auditory meatus, smaller less downward projecting mastoid process, and parietal bossing.

Race

Caucasoids skulls have narrow pointed mastoid process, rounded/elongated oval sagittal outline, small degree of facial prognathism, high and peaked nasal cross section, and a projecting chin.

American Black skulls have oblique mastoid process, high degree of facial prognathism, low and broad nasal cross section, and a elongated sagittal outline.

Asian skulls have a flatter frontal lobe, low degree of facial prognathism, a small and low nasal cross section, a less projecting chin, and a more rounded mastoid process.