Dinosaurs science

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  • Dinosaurs science

    1. 1. M illio n s o fye a r s a g o ,Great beasts called"dinosaurs" thundered over the earth.Yet up until the lastcentury, when the first dinosaur fossilswere discovered, no one even imaginedsuch animals existed.
    2. 2. D in o s a u r s Before there were any people there were dinosaurs. Dinosaurs were one of several kinds of prehistoric reptiles that lived during the Mesozoic Era the “Age of the Reptiles”
    3. 3.  Dinosaur is the name of a group of prehistoric reptiles that ruled the earth about 160 million years ago. These animals died out millions of years ago, but they have fascinated people ever since they were first described in the early 1800’s.
    4. 4. Kinds ofDinosaurs
    5. 5. Dinosaur Nat ional Monument Ut ah/ColoradoA stony frieze at one of the continent’s largestand richest dinosaur quarries holds the bones ofbeasts that ruled the Jurassic: stegosaurs,allosaurs, apatosaurs and many more.
    6. 6. The first dinosaur to be describedscientifically was Megalosaurusin 1824, by William Buckland.Buckland (1784-1856) was aBritishfossil hunter andclergyman who discoveredsome Megalosaurus fossils in1819 and named the reptilein 1824. It was the first dinosaurever described scientifically andfirst theropod dinosaur discovered(this is all in hindsight, because the dinosaurs had not yet beenrecognized as a separate taxonomic group - the word dinosaur hadnt even been invented yet).
    7. 7. Megalosaurus
    8. 8. Did They Have Colors? It is very difficult to figure out how the dinosaurs sounded, how they behaved, or what color they were.
    9. 9. Plant-Eaters Most dinosaurs were plant-eaters like:Triceratops What do we call plant-eaters?Herbivores
    10. 10. Meat-Eaters Some were meat-eaters like:T-Rex What do we call meat-eaters?Carnivores
    11. 11. The Food Chain
    12. 12. Where Did Everybody Go? You may have noticed that there are no dinosaurs around these days. In fact, there havent been any around for about 66 million years.
    13. 13. Well, we don’t know the real absolute theory of how theybecame extinct, but---- One thing for sure is………. We will have an incredible time going back in time to learn about these marvelous creatures.
    14. 14. here are some

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