- 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 timing of the evolution of dinosaurs is a subject of active research
- 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 as surprising facts about their
- Dinosaur | Definition, Types, History, Names, Facts | Britannica
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
- 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 that have lived on Earth for about 245 million years
- Dinosaurs - Natural History Museum
Get your fill of dinosaur facts and fun, and find out all about the reptiles that once dominated our planet Ever since they were first identified in the 1800s, dinosaurs have sparked the imagination of kids and adults alike
- What is a dinosaur? - Science News Explores
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 In fact, dinos are a specific group of reptiles They have been around continuously for more than 200 million years
- 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 their extinction
- The Dinosauria - University of California Museum of Paleontology
The Dinosauria Dinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles," specifically Megalosaurus, Iguanodon, and Hylaeosaurus, the only three dinosaurs
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