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Evolution Of Jaw Mechanisms In Ornithopod Dinosaurs

D. Weishampel
Published 1984 · Computer Science, Medicine

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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.- 6.1.1 Frontal-Parietal Joint.- 6.1.2 Postorbital-Frontal Joint.- 6.1.3 Postorbital-Parietal Joint.- 6.1.4 Postorbital-Squamosal Joint.- 6.2 Quadrate Unit.- 6.2.1 Quadrate-Squamosal Joint.- 6.2.2 Quadrate-Pterygoid Joint.- 6.2.3 Quadrate-Quadratojugal Joint.- 6.2.4 Jugal-Quadrate Joint.- 6.2.5 Quadrate-Mandible Joint.- 6.3 Muzzle Unit.- 6.3.1 Frontal-Frontal Joint.- 6.3.2 Nasal-Frontal Joint.- 6.3.3 Premaxilla-Frontal Joint.- 6.3.4 Prefrontal-Frontal Joint.- 6.3.5 Prefrontal-Lacrimal Joint.- 6.3.6 Lacrimal-Nasal Joint.- 6.3.7 Prefrontal-Premaxilla Joint.- 6.3.8 Nasal-Nasal Joint.- 6.3.9 Nasal-Premaxilla Joint.- 6.3.10 Nasal-Maxilla Joint.- 6.3.11 Premaxilla-Premaxilla Joint.- 6.3.12 Maxilla-Premaxilla Joint.- 6.3.13 Premaxilla-Lacrimal Joint.- 6.3.14 Nasal-Prefrontal Joint.- 6.3.15 Postorbital-Prefrontal Joint.- 6.4 Maxillopalatal Unit.- 6.4.1 Palatine-Pterygoid Joint.- 6.4.2 Pterygoid-Ectopterygoid Joint.- 6.4.3 Maxilla-Ectopterygoid Joint.- 6.4.4 Maxilla-Palatine Joint.- 6.4.5 Maxilla-Pterygoid Joint.- 6.4.6 Jugal-Maxilla Joint.- 6.4.7 Maxilla-Lacrimal Joint.- 6.4.8 Jugal-Lacrimal Joint.- 6.4.9 Lacrimal-Palatine Joint.- 6.4.10 Jugal-Quadratojugal Joint.- 6.4.11 Jugal-Ectopterygoid Joint.- 6.4.12 Postorbital-Jugal Joint.- 6.4.13 Squamosal-Quadratojugal Joint.- 6.4.14 Jugal-Palatine Joint.- 6.4.15 Palatine-Ectopterygoid Joint.- 6.4.16 Vomer-Palatine Joint.- 6.4.17 Vomer-Pterygoid Joint.- 6.4.18 Vomer-Premaxilla Joint.- 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.
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