Dictionary of Human Evolution and Biology

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Mean Porion Height Index

Comparison of skull height to the length and width; porion-bregma height divided by maximum cranial length + maximum cranial breadth divided by 2 and multiplied by 100. An index of 66.99 or less is considered low, 67.00 to 71.99 is considered medium, and 72.00 and greater is considered high.

Cf. mean basion height index.

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