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  1. Dinosaur - Wikipedia

    Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and …

  2. Dinosaurs 101 | National Geographic - YouTube

    Over a thousand dinosaur species once roamed the Earth. Learn which ones were the largest and the smallest, what dinosaurs ate and how they behaved, as well ...

  3. Dinosaur | Definition, Types, History, Names, & Facts | Britannica

    6 days ago · Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years.

  4. Dinosaur Facts - American Museum of Natural History

    Delve into these fast facts about dinosaurs for kids of all ages. Discover why the Tyrannosaurus had sharp teeth, where the name “dinosaur” comes from, and more! Dinosaurs are a group of reptiles …

  5. What are dinosaurs? - Natural History Museum

    Our brief introduction to dinosaurs reveals a key feature that gave them an advantage over other prehistoric reptiles. Dinosaurs are a group of reptiles that dominated the land for over 140 million …

  6. Dinosaurs – The Complete Guide, With Facts And Pictures

    Jun 6, 2024 · Complete guide to dinosaurs, with list of dinosaurs from each period. Dinosaur evolution, extinction, types, plus interesting facts.

  7. What is a dinosaur? - Science News Explores

    Mar 27, 2025 · The word “dinosaur” isn’t a catch-all term for just any scaly, prehistoric giant. “There’s kind of a misconception that any big extinct thing was a dinosaur,” Smith says.

  8. Jurassic Quest Des Moines 2026 Tickets | Mar 13–15 | Iowa Events Center

    Mar 13, 2015 · Embark on a journey where North America’s largest moving, roaring, and breathing dinosaurs come alive in a fully immersive walk-through experience. Discovery awaits at every turn as …

  9. Dinosaurs - National Geographic Society

    Scientists estimate over a thousand dinosaur species once roamed Earth. Learn which ones were the largest and the smallest, what dinosaurs ate and how they behaved, as well as surprising facts about …

  10. New Spinosaurus species had a massive head crest : NPR

    2 days ago · The semi-aquatic dinosaur, Spinosaurus mirabilis, was discovered by an international team of scientists working in Niger.