Figure 1. Wing shapes in birds and pterosaurs according to Witton and Habib 2010. Boxed areas, B2 and C2, are revised wing shapes based on data in Peters 2002. Figure 2. The wing of Anhanguera. A. According to Witton and Habib 2010, dorsal view. B. Closeup of same detailing misplaced fingers. C. The same according to the present study. D. Ventral view of free fingers. E. Lateral view (in flight) of metacarpus showing arrangement of metacarpals. The hinge that is created at the mcIII-IV interface sometimes permits the free fingers to be pushed up against mc IV during taponomy. If preserved dorsal side down as in the holotype of Eudimorphodon, this hinge can be flipped ventrally as well. Animated GIF of a walking pterosaur matched to pterosaur tracks. Click the image or click here to view the animation.