Pterosaurs and plesiosaurs weren't actually dinosaurs.
Fact #11449
More Dinosaur Facts
Argentinosaurus weighed roughly as much as ten African elephants.
Fact #11444 · Dinosaur
T. rex lived closer in time to us than to Stegosaurus.
Fact #11446 · Dinosaur
Some dinosaurs replaced their teeth every two weeks throughout life.
Fact #11448 · Dinosaur
Pterosaurs and plesiosaurs weren't actually dinosaurs.
Fact #11449 · Dinosaur
Stegosaurus had a brain about the size of a walnut.
Fact #11447 · Dinosaur
Birds are dinosaurs — every chicken alive today is a living dinosaur.
Fact #11445 · Dinosaur
The asteroid that killed the dinosaurs hit Earth at about 45,000 mph.
Fact #11450 · Dinosaur
Dinosaurs ruled Earth for about 165 million years.
Fact #11451 · Dinosaur
Want more facts?
We have over 11,491 facts across 15 categories.