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Dinosaur Facts
10 facts in Dinosaur. Click any fact to see its full page.
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✨ Dinosaur 10
Dinosaurs ruled Earth for about 165 million years.
The asteroid that killed the dinosaurs hit Earth at about 45,000 mph.
Pterosaurs and plesiosaurs weren't actually dinosaurs.
Some dinosaurs replaced their teeth every two weeks throughout life.
Stegosaurus had a brain about the size of a walnut.
T. rex lived closer in time to us than to Stegosaurus.
Birds are dinosaurs — every chicken alive today is a living dinosaur.
Argentinosaurus weighed roughly as much as ten African elephants.
Velociraptor was about the size of a turkey and almost certainly had feathers.
A Tyrannosaurus rex tooth was about the size of a banana, including the root.