Relative Brain Size: A New Measure

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Science  17 Feb 1967:
Vol. 155, Issue 3764, pp. 836-838
DOI: 10.1126/science.155.3764.836


The relation of the volume of the endocranial cavity to the area of the foramen magnum is a measure of relative brain size in mammals. The outstanding advantage of this method is that only a skull is required for a set of measurements.