Reconstruction of the wing mechanics in a Late Triassic pterosaur, Eudimorphodon cromptonellus. The asymmetry of the condyles at the distal end of the fourth metacarpal engender a rotational flexion of the distal wing during upstroke, and a folding of the wing. (F. A. Jenkins, Jr., N. H. Shubin, S. M. Gatesy and K. Padian. 2001. A diminutive pterosaur (Pterosauria: Eudimorphodontidae) from the Greenland Triassic. Bulletin of the Museum of Comparative Zoology, 156(1): 151-170).
Studies of the comparative anatomy of fossil and recent vertebrates and the evolutionary pathways of structural and functional development.