Figure 1.

An interpopulation comparison demonstrating statistically significant differences between the sagittal foramen magnum length among Peruvians to sagittal foramen lengths of crania from individuals of African descent (excluding Egyptians), the geographic region of Bengal, East Asians, Europeans, and Malayans. The least mean difference between Peruvian foramen magnum and other populations was that between the Peruvian and European populations (3.352 ± 0.9782 mm, mean ± standard error of the mean). Conversely, the greatest mean difference between Peruvian foramen magnum and other populations was that between the Peruvian and African populations (4.071 ± 1.256 mm)