a, b, Three dorsal vertebrae, ribs and neural plates (shifted onto one side; others are not exposed) in ventral views. c, Scapula and coracoid in medial view. d, Two pubes in inner and posterior caudal vertebrae in lateral views. e, Geological time table of the Triassic period, showing the stratigraphic distribution of basal members of Testudinata, and a cladogram depicting the phylogenetic relationships of Odontochelys with other Triassic turtles. Abbreviations as in Figs 1 and 2, plus: co, coracoid; cof, coracoid foramen; lppu, lateral process of pubis; npl, neural plate; sc, scapula; thyf, thyroid fenestra; trp, transverse process of dorsal vertebrae.