Fig. 2.

The cast of the Jinniushan os coxae in position for measurement of total pelvic breadth (biiliac breadth) as described in the text. The sacrum is an unassociated modern human sacrum that allowed us to visually determine the position of the midline. Maximum perpendicular distance from the lateral edge of the iliac crest to the midline was taken and then doubled to estimate biiliac breadth. Note that, because of parallax and foreshortening in the photograph, exact dimensions cannot be measured on the figure.