Fig. 15 in Isometry in mesosaurs: Implications for growth patterns in early amniotes

Fig. 15. Metacarpal length measured in each manus (A, B) and pes (C, D) of Mesosaurus tenuidens Gervais, 1865 (A, C) and Hovasaurus boulei Piveteau, 1926 (B, D). Each line represents the hand or foot of one specimen. Number of samples (N) is shown in each figure. Black dashed line represents the empirical proportions followed for the mesosaur metatarsals: mt(n) = mt(1) + n/4 where mt(1) is the measure of the metatarsal I. Metapodium is represented in the upper left corner of each figure (see Figs. 1, 2). Abbreviations: CI–CV, metacarpals; TI–TV, metatarsals.