Figure 1 in The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics

Figure 1. Two extinct marine crocodylians, and an ichthyosaur, showing the extensive morphological adaptations to a pelagic lifestyle in metriorhynchids: Platysuchus SMNS 9930 (A), a teleosaurid, displays the comparatively heavier body typical of semi-aquatic teleosaurids, goniopholidids, pholidosaurids and eusuchians; in contrast to the hydrodynamic metriorhynchids, such as Cricosaurus suevicus SMNS 9808 (B). The ichthyosaur Stenopterygius SMNS 81841 (C) has similar adaptations to metriorhynchids, i.e. hydrofoil-like forelimbs, hypocercal tail, and the reduction in limb girdle size. Scale bar = 50 mm.