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Dinosaurs! Dinosaur KWL What I KNOW about dinosaurs. What I WANT to know. What I LEARNE D. What are dinosaurs? Dinosaurs are part of the reptile family. They lived before people were on Earth. Dinosaurs all had different characteristics. Some dinosaurs were huge, some were tiny. Some dinosaurs had armor plates, some had sharp teeth, some ran really fast. Some ate meat (carnivores), some ate plants (herbivores), and some ate both (omnivores). Carnivores (Meat Eaters) Only ate meat (usually other dinosaurs). Have sharp, pointed teeth and powerful jaws. Examples: Velociraptor, Tyrannosaurus Rex Herbivores (Plant Eaters) Only ate plants (like leaves and flowers). Had small, flat teeth that were good for chewing plants. There were more herbivores than carnivores. Examples: Triceratops, Stegosaurus When did dinosaurs live? Dinosaurs lived from 225 to 65 million years ago during the Mesozoic Era, or the Age of the Dinosaurs. This was split into three periods: First the Triassic Period, then the Jurassic Period, and lastly the Cretaceous Period. How long ago was that? What did they look like? We don’t know for sure since there are no pictures. They could have had funny patterns, strange skin, or look exactly the way we see in movies and drawings – we just don’t know for sure. Tyrannosaurus Rex Stegosaurus Triceratops Saurolophus How do we know all this? We learn everything about dinosaurs through fossils! You’ll learn more about fossils next week!