Fig. 1

Body shapes of selected Mesozoic marine reptile groups. aPlotosaurus (mosasaur); bMuraenosaurus (plesiosaur); cPlacodus (placodont); dArchelon (sea turtle); eOphthalmosaurus (ichthyopterygian); fAskeptosaurus (thalattosaur); gPleurosaurus (pleurosaurs); hMetriorhynchus (thalattosuchian). a–g Modified from Camp (1942), Andrews (1910), Carroll (1988), Wieland (1909), McGowan and Motani (2002), Kuhn-Schnyder (1952), Carroll (1985), and Hua and Buffrenil (1996), respectively. Body outlines are inaccurate