Figures

Figure 17.2   Lepidosaurs: (a) the Late Triassic sphenodontid Planocephalosaurus; (b) the Late Jurassic lizard Ardeosaurus; and (c, d) skulls of a modern lizard (c) and snake (d), showing the points of mobility that permit wide jaw opening. (a, based on Fraser & Walkden 1984; b, based on Estes 1983.)

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