Fig. 1 in Diversity of diapsid fifth metatarsals from the Lower Triassic karst deposits of Czatkowice, southern Poland -functional and phylogenetic implications

Fig. 1. Comparison of the fifth metatarsal architecture. Left bones in plantar view demonstrate hooking and articular facet orientation (A1–C1, D, E1, F1) and in proximal view (plantar surface down) (A2–C2, F2). A. Iguana iguana (Linnaeus, 1758), Iguanidae, Recent. B. Sphenodon punctatus (Gray, 1842), Rhynchocephalia, Recent. C. Sophineta cracoviensis Evans and Borsuk-Białynicka, 2009, Lepidosauromorpha, Early Triassic, Poland. D. Gephyrosaurus bridensis Evans, 1980, Rhynchocephalia, Early Jurassic, South Wales, UK (right MttV reversed). E. Osmolskina czatkowicensis Borsuk-Białynicka and Evans, 2003, Archosauriformes, Early Triassic, Poland. F. Morphotype X, Early Triassic, Poland. The dashed lines approximate the outlines of the fifth metatarsals as seen in proximal view (for additional explanation see Material and methods). ha, hooking angle. Not to scale. A, B1, C, after Robinson (1975); D, after Evans (1981).