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Fig. 1. Strain gauge placement in Polypterus endlicherii. Single-element
strain gauges were bonded across the interfrontal (IF), interparietal (IP) and
frontoparietal (FP) sutures. Strips of TeflonTM were placed along each
suture before bonding the gauges to prevent gluing the suture shut. Due to
space constraints, a single rosette gauge was glued to the left frontal bone
(Fr), with the Ea component aligned with the FP gauge, and
the Ec component parallel to the IF gauge. Pa, parietal;
Eb, measured bone strain at 45° to
Ea and Ec.