Figure 35 in Scelidosaurus harrisonii (Dinosauria: Ornithischia) from the Early Jurassic of Dorset, England: biology and phylogenetic relationships

Figure 35. Scelidosaurus. Femur and hindlimb motion examined. The principal lines of action of retractor muscles and their influence upon the femur and hindlimb poses have been reconstructed as a series of cartoons. A, dorsal view of the femur in 'neutral' pose with lines of action of main muscles: note in particular the lateral or medial attachment of these muscles on the femoral shaft. B, vertical pose of the femur with an indication of the posteromedial lines of action of the powerful limb retractors (cfb/l, m. caudifemoralis; add, m. adductor). C, cross-section through the femoral shaft at the level of the 4th trochanter showing the torsion inducing lines of action of the principal protractors (pifi, ist) and retractors (if, cfb, cfl). D, mechanical influence on hindlimb protraction resulting from the breadth of the gut. E, oblique-to-parasagittal hindlimb excursion during the protraction-retraction cycle.