Figure 18 in Three-dimensional geometry of a pterosaur wing skeleton, and its implications for aerial and terrestrial locomotion

Figure 18. Three-dimensional virtual model of Anhanguera, with all limb joints in their respective close-packed positions, except the knee, which is shown partially flexed so that the tibiotarsus is directed backwards. A, ventral view, with flight membranes. Three possible trailing edges of the cheiropatagium are shown: running from the wingtip to the distal end of the crus (solid line), the proximal end of the crus (broken line), and the hip (dotted line). Two possible leading edges of the propatagium are shown, corresponding to an anteroventral orientation of the pteroid (solid line) and a medial orientation of the pteroid (broken line – pteroid itself omitted in this case for clarity). Two possible trailing edges of the cruropatagium are shown: running from the tip of the tail to the distal end of the crus (solid line), and to the proximal end of the crus (broken line). See text for further explanation. B, anterior view, membranes omitted for clarity. For a list of anatomical/arthrological abbreviations, see Appendix 1. Scale bar: 500 mm.