Fig. 6.

Strain vector plots of in vivo strain data collected from the anterior surface of the postorbital bar on the right and left sides of the skull. In experiment 38, data were collected from the left side of the skull but are reflected onto the right about a vertical axis to facilitate comparisons. The gage in experiment 48 was positioned lower (approximately 1/3 of the orbit height) than one half orbit height (lower bar site); in the remaining experiments the gages were positioned at approximately mid-orbit height (upper gage site). The reference line is a horizontal line superimposed on the images. The black arrows represent the extremes of the ranges of the mean ε₁ orientations from the in silico‘gage sites’ in Fig. 7.