however , only index iv could be reliably used in predicting the sex of an unknown skull : ( formula : see text ) was derived from breadth iv ( distance between the two temporo-occipital fissures at their lateralmost points ) and length ii ( distance between the basion and a line drawn between the two medialmost points of the jugular foramina in the midline ) .
C0037303
skull
C0222712
jugular foramina