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• n  the large opening at the base of the cranium through which the spinal cord passes

News & Articles

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• Anthropologists confirm link between cranial anatomy and two-legged walking
  Anthropologists confirm a direct link between upright two-legged (bipedal) walking and the position of the foramen magnum, a hole in the base of the skull that transmits the spinal cord.
  Sept. 26, 2013 - Science Daily