Here are some facts about dinosaurs:
1. The name dinosaur comes from Greek, meaning "terrible lizard".
2. Dinosaurs existed on Earth for about 160 million years, mainly in the Triassic, Jurassic and Cretaceous periods.
3. Dinosaurs are divided into two categories: Ornithischians and Saurischians. Ornithischians include some dinosaurs that look like birds, while Saurischians include some larger and heavier dinosaurs.
4. There are hundreds of dinosaur species that have been discovered and studied, and their body shapes, appearance characteristics and habits are different.
5. The cause of dinosaur extinction has not been fully determined yet. Scientists currently believe that it may be due to a series of natural disasters and climate change.
6. Dinosaur fossils and remains have been discovered all over the world and provide important clues for our understanding of prehistoric creatures and the evolution of Earth history.
7. Modern birds are considered to be descendants of dinosaurs, so we can regard them as inheriting the genetic genes of dinosaurs to some extent.
8. Many dinosaurs are herbivorous, such as the famous Diplodocus and Stegosaurus, but some dinosaurs are carnivorous, such as Tyrannosaurus and Velociraptor.
9. Dinosaurs are often used and depicted in movies, literature, art, etc., and have become a popular and beloved subject.
10. At present, there are many dinosaur theme parks and museums around the world for people to watch and learn about dinosaurs.
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