VIII TABLE or CONTENTS. 



Family Ceratosauridae — Continued. 



Osteology of Ceratosaurus — Continued. Page. 



Pelvis 106 



Ilium 107 



Pubis 107 



Ischium 108 



Hind limb and foot 108 



Femur 108 



Tibia 110 



Fibula 110 



Tarsus 110 



Astragalus and calcaenum Ill 



Metatarsals K 112 



Dermal armor 113 



Mounted skeleton of Ceratosaurus nasicornis Marsh 114 



Restorations of Ceratosaurus : 115 



Review and revision of type and other theropod specimens. 116 



Family Megalosauridae 116 



Dri/ptosaurus? potens (Lull) 116 



Dryplosaurusf medius (Marsh) .■ 119 



Ti/rannnsaurus rex Osborn 121 



Deinodonf grandis (Marsh) 122 



Dcinodon. species 123 



Labrosaurus Jerox MaJsh 124 



Family Coeluridae 126 



Coclurus? gracilis Marsh 126 



Coelurus /ragilis Marsh 127 



Coeliirus agilis Marsh 128 



Family Ornithomimidae 129 



Ornithomimus sedens Marsh 131 



Ornithomimus tenuis Marsh 135 . 



Ornithomimus affinis, new species 137 



Ornithomimus minutus Marsh 142 



Carnivorous Dinosaurian Cope 144 



Observations on the progressive structural modifications of the Theropod skeleton 144 



List of works cited 147 



Explanation of plates 149 



Index 155 



