I. In the beginning. Megalosaurus: the "great lizard," the "Scrotum humanum," and the first named dinosaur ; Iguanodon: Gideon Mantell, Louis Dollo, and the first dinosaur fauna ; Cetiosaurus: the "whale lizard," Richard Owen, and the first known sauropod ; Hadrosaurus: Joseph Leidy and the first American dinosaur ; Eoraptor: the first dinosaurs
II. The long-necked giants: the sauropods. Plateosaurus: ancestors of the giants ; Apatosaurus and Brontosaurus: Marsh, Cope, and the Bone Wars ; Diplodocus: the real "Jurassic Park" and Carnegie's gift ; Giraffatitan: the tallest of the tall, and the Tendaguru ; Patagotitan: who's the biggest of them all?
III. Red in tooth and claw: the theropods. Coelophysis: the little dinosaur of Ghost Ranch ; Cryolophosaurus: denizen of the polar darkness ; Spinosaurus: lost giants of Egypt ; Tyrannosaurus: king of the tyrant reptiles ; Giganotosaurus: biggest predator of all? ; Deinocheirus: "terrible hands" lead to big surprises ; Velociraptor: "terrible claws" and the dinosaur renaissance ; Sinosauropteryx: feathered dinosaurs and the origin of birds
IV. Horns and spikes and armor and duck beaks: the ornithischians. Heterodontosaurus: the origin of ornithischians ; Stegosaurus: the "roofed lizard' and the thagomizer ; Ankylosaurus: armored dinosaurs and "Mr. Bones" ; Corythosaurus: duckbills with headgear ; Stegoceras: the "unicorn dinosaur" and the boneheads ; Protoceratops: the griffin legends and the origin of horned dinosaurs ; Triceratops: the "dinosaurian bison" and the last of the dinosaurs.