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The Day of the Dinosaur
Stratigraphic correlationmatching of beds by fossils 2122
Out of the Sea
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Africa Allosaurus American Museum amphibians ancestors animal's ankylosaur armor beast became beds birds body bones Brontosaurus carnivorous carnosaurs ceratopsians coelurosaurs continents Cope creature crocodiles Cuvier cycads Darwin dinosaurs dragon early earth eggs elephant Europe evolution evolved expedition extinct feet long fish flesh-eaters forelegs fossil-hunting fossils genera genus geologists head herbivores hindlegs horns ichthyosaurs iguanodons insects jaws Jurassic kinds land animals land bridges Late Cretaceous later legs Leidy living lizard lizardlike looked lungs mammals Marsh Mesozoic Mesozoic reptiles modern monster mosasaur Museum of Natural mutations Natural History neck North America O. C. Marsh ornithischians ornithopods Osborn pair paleontologists pelycosaurs Period Permian placodonts plant-eating plants plates plesiosaurs prey pterosaurs rock sauropod saurs scientists sea serpent skeleton skull smaller snakes species specimen spines stegosaurs suborder surface tail teeth theory therapsids theropods tion trees Triassic turtles Tyrannosaurus vertebrae whale wings