Vertebrate Paleontology

  1. Ornithischian Diversity
    1. Ornithischian Characteristics
      1. Predentary Bone
        1. Leaf-shaped Teeth
          1. Herbivorous Specializations
          2. Basal Ornithischians
            1. Lesothosaurus
              1. Scutellosaurus
                1. Emausaurus
                2. Thyreophora
                  1. Armor Evolution
                    1. Scelidosaurus
                      1. Stegosauria
                        1. Stegosaurus
                          1. Kentrosaurus
                            1. Tuojiangosaurus
                            2. Ankylosauria
                              1. Nodosauridae
                                1. Ankylosauridae
                                  1. Club Tail Evolution
                                2. Ornithopoda
                                  1. Heterodontosauridae
                                    1. Hypsilophodontidae
                                      1. Iguanodontia
                                        1. Camptosaurus
                                          1. Iguanodon
                                            1. Hadrosauridae
                                            2. Dental Batteries
                                              1. Chewing Mechanisms
                                              2. Marginocephalia
                                                1. Pachycephalosauria
                                                  1. Dome Evolution
                                                    1. Head-butting Behavior
                                                      1. Stygimoloch
                                                        1. Pachycephalosaurus
                                                        2. Ceratopsia
                                                          1. Psittacosaurus
                                                            1. Protoceratops
                                                              1. Ceratopsidae
                                                                1. Frill and Horn Evolution
                                                              2. Ornithischian Ecology
                                                                1. Herding Behavior
                                                                  1. Nesting Sites
                                                                    1. Parental Care
                                                                      1. Predator Avoidance

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                                                                    20. Theropod Evolution and Diversity

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                                                                    22. Avian Origins and Early Evolution