Evolution of Jaw Mechanisms in Ornithopod Dinosaurs

1 Introduction.- 2 Ornithopod Jaw Mechanics.- 3 Materials and Methods.- 4 Comparative Arthrology.- 4.1 Introduction.- 4.2 Mechanical Units.- 5 Neurocranial Segment.- 5.1 Laterosphenoid-Skull Roof Joint.- 5.2 Basisphenoid-Pterygoid Joint.- 6 Maxillary Segment.- 6.1 Parietal Unit.- 6.2 Quadrate Unit.- 6.3 Muzzle Unit.- 6.4 Maxillopalatal Unit.- 7 Mandibular Segment.- 7.1 Dentary-Dentary Joint.- 7.2 Predentary-Dentary Joint.- 8 Dental Morphology.- 8.1 Fabrosauridae.- 8.2 Heterodontosauridae.- 8.3 Hypsilophodontidae.- 8.4 Iguanodontidae.- 8.5 Hadrosauridae.- 9 Kinematic Analyses of Ornithopod Jaw Mechanisms.- 9.1 Predictions.- 9.2 Documentation and Evolutionary Implications.- 10 Discussion and Conclusions.- 11 Summary.- 12 Acknowledgments.- Note added in proof.- 13 References.- 14 Subject Index.