🦕 Khủng long
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Some dinosaurs were smaller than a chicken.
Many scientists think birds are the cousins of dinosaurs.
Triceratops had three horns on its face and a big bony frill.
Some plant-eating dinosaurs swallowed stones to help grind up food.
Stegosaurus had rows of bony plates along its back.
Argentinosaurus was one of the biggest dinosaurs that ever lived.
The oldest dinosaur fossils are more than 200 million years old.