2. Dinosaurs

Dinosaurs

Dinosaurs' fossilized bone skeletons in natural history museums: tyranosaurus rex, diplodicus, carnotaurus, archosaur, allosaurus, stegosaurus, ankylosaur, dorudon, comptosaurus, mamenchisaurus, dimetrodon, eryops, pteranodon, protostega, hydrosaur, duckbilled
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Dinosaur skeleton: Duckbilled dinosaurs - hadrosaurs - were plant eaters who lived in groups. This one is 66 million years old and survived a battle with a tyranosaurus rex that left a scar midway back on its tail. It probably browsed/grazed on all four legs, but it could run on its hind legs if it had to. Lower right is skeleton of a triceratops head. Denver Museum of Nature and Science, December 2005.
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Dinosaur skeleton: Duckbilled dinosaurs - hadrosaurs - were plant eaters who lived in groups. This one is 66 million years old and survived a battle with a tyranosaurus rex that left a scar midway back on its tail. It probably browsed/grazed on all four legs, but it could run on its hind legs if it had to. Lower right is skeleton of a triceratops head. Denver Museum of Nature and Science, December 2005.

duckbilledhadrosauredmontosaurusduckbillplant eatingtriceratops58651719 49858702museum of nature and sciencedenvercoloradodinosaurskeletonfossilprehistoricanimalmuseumnaturalsciencenatureprehistoric animalnatural sciencehistorynatural history

  • Dinosaur/dinosaur genera: Dimetrodon attacking an Eryops, both living during the Permian period 245-280 million years ago, long before the dinosaurs evolved. Dimetrodon was a mammal-like reptile, an ancestor of mammals, about 11 feet long weighing 500+ pounds, with a large sale-like flap of skin along its back supported by long, bony spines. It had sharp teeth and clawed feet. The Eryops was a common, primitive amphibian living in swamps, a meat eater with stout body and very wide ribs. It was 5 feet long, a large land animal for its time. Museum of Nature and Science, Denver, Colorado 2005.
  • Dinosaur skeleton: Pteranodons were flying reptiles that lived near the sea, catching and eating fish the way sea birds do today. Late Cretaceous Period, 85 million years ago, found in Niobrara Chalk, Lane County, Kansas. Denver Museum of Nature and Science, Denver, Colorado December 2005.
  • Dinosaur skeleton: Dueling dinosaurs: full skeletons of Tyrannosaurus Rex on left and stegosaurus in famous battle in Rotunda of Los Angeles County Museum of Natural History. January 2006.
  • Dinosaur skeleton: Stegosaurus; Jurrasic; Los Angeles County Museum of Natural History. January 2006.
  • Dinosaur skeleton : Diplodocus tongus, a long-necked dinosaur of the late Jurassic Period, 150 million years ago, from the Morrison Formation, Uinta County, Utah. The diplodocus were sauropods, which were plant eaters and the largest land animals ever, thriving worldwide. Denver Museum of Nature and Science, December 2005.
  • Dinosaur skeleton: Duckbilled dinosaurs - hadrosaurs - were plant eaters who lived in groups. This one is 66 million years old and survived a battle with a tyranosaurus rex that left a scar midway back on its tail. It probably browsed/grazed on all four legs, but it could run on its hind legs if it had to. Lower right is skeleton of a triceratops head. Denver Museum of Nature and Science, December 2005.
  • Dinosaur skeleton: Carnotaurus was a large flesh eating dinosaurus in South <br /> America 70 million years ago. skeleton artists reconstruction Patagonia, Argentina. Los Angeles County Museum of Natural History
  • Dinosaur skeleton: Ankylosaur, gargoyleosaurus parkpini, was a heavily armored plant eater living 145 million years ago, in the late Jurassic period. Denver Museum of Nature and Science, December 2005.
  • Dinosaur skeleton: Ankylosaur, gargoyleosaurus parkpini, was a heavily armored plant eater living 145 million years ago, in the late Jurassic period. Denver Museum of Nature and Science, December 2005.
  • Dinosaur skeleton: Hypsilophodon foxii was lightly built and fast dinosaur of the Early Cretaceous period, 124-113 million years ago. Los Angeles County Museum of Natural History
  • Dinosaur, prehistoric skeleton: Casting of tail club from Ankylosaur, swung as club to protect itself from predators. Cretaceous Period, 120-65 million years ago. Exhibit Museum of Natural History, University of Michigan, Ann Arbor, August 2006.
  • Dinosaur skeleton: Deinonychus antirrhopus was a dromaeosaur, meat eating, hunting dinosaurs that lived in the Cretaceous Period 145-65 million years ago. Exhibit Museum of Natural History, University of Michigan, Ann Arbor, July 2006.
  • Dinosaur skeleton: Edmontosaurus (known as Ed at the museum) is a hadrosaur/duckbilled dinosaur, a plant eater, that lived at the end of the Cretaceous Period, 66 million years ago. Exhibit Museum of Natural History, University of Michigan, Ann Arbor 2006.
  • Dinosaur skeleton: "The Terror of the Triassic Swamps: Phytosaurs were large, aquatic reptiles that lived in and along rivers and swamps about 210 million years ago. Phytosaurs resembled crocodiles but were not ancestral to them. This skull came from an animal that was nearly twenty feet in length. Long jaws lined with sharp teeth indicate that phytosaurs were meat-eaters and would have been able to prey on any animal unlucky enough to gt too close." Exhibit Museum of Natural History, University of Michigan, Ann Arbor, July 2006.
  • Dinosaur skeleton photos: Battle of the dinosaurs 150 million years ago. Allosaurus on left and stegasaurus on right battle it out. Allosaurus fragilis from Moffat County, Colorado and Stegosaurus stenops from Fremont County, Colorado. Baby stegosaurus in foreground, Uintah County, Utah. Denver Museum of Nature and Science, December 2005.
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