Early Animal Encyclopedias: Dinosaurs

Early Animal Encyclopedias: Dinosaurs book cover — Introduction 4 Allosaurus 6 Amargasaurus 8 Anchiornis Ankylosaurus 12 Apatosaurus 14 Iguanodon Archaeopteryx 16 Kentrosaurus Argentinosaurus 18 Baryonyx 20 Brachiosaurus 22 Camarasaurus 24 Carcharodontosaurus 26 Carnotaurus 28 30 32 Ceratosaurus Coelophysis Compsognathus 34 Concavenator Deinocheirus Deinonychus 10 Herrerasaurus.36 Cryolophosaurus 38 CONTENTS Dilophosaurus 44 Diplodocus 46 Dreadnoughtus 48 Edmontosaurus Gigantoraptor 58 50 Euoplocephalus 52 Gallimimus 54 Giganotosaurus 56 Giraffatitan 60 Hadrosaurus 62 64 Heterodontosaurus 66 68 70 Kosmoceratops 72 Lambeosaurus 74 Maiasaura 76 Majungasaurus 78 Mamenchisaurus 80 Massospondylus 82 Microraptor 84 Minmi 86 Nigersaurus Oviraptor 40 Pachycephalosaurus 94 42 Pachyrhinosaurus 96 90 92 Parasaurolophus 98 Plateosaurus 100 Sinosauropteryx 102 Spinosaurus 104 Stegosaurus 106 Styracosaurus 108 Suchomimus 110 Tarbosaurus 112 Therizinosaurus 114 Triceratops 116 118 Tyrannosaurus 120 122 124 Troodon Muttaburrasaurus 88 Index Utahraptor Velociraptor Glossary 126 127

Early Animal Encyclopedias: Dinosaurs — page 1 — 4 INTRODUCTION Dinosaurs roamed Earth for many millions of years The World of Dinosaurs Millions of years ago dinosaurs stomped dashed and glided around Earth Many grew to incredible sizes Others were very small Some hunted and ate meat Others grazed on plants All dinosaurs were reptiles Dinosaurs evolved and went extinct or died out during three time periods The first is the Triassic This period began 252 million years ago Back then Earth was much warmer than it is today The continents were one landmass It was

Early Animal Encyclopedias: Dinosaurs — page 2 — 5 called Pangaea Pangaea The Jurassic Period was 201 million to 145 million years ago The Cretaceous came last The continents slowly separated during these time periods An asteroid hit Earth 66 million years ago This ended the Cretaceous Period Most dinosaurs went extinct But some survived They continued to evolve Birds are the living descendants of dinosaurs Sometimes dinosaur bones footprints eggs and other remains got preserved These are called fossils Scientists use fossils to learn more about dinosaurs Pterosaurs above and plesiosaurs below were not dinosaurs But they lived at the same time as dinosaurs

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