Meet Diplodocus

Diplodocus (dih-PLOD-uh-kus) was a very big dinosaur! It was about 90 feet long. That's as long as two school buses. It lived in the western U.S. about 155 million years ago.


It walked on four legs. Its head was small for its body size. Its brain was only as big as an orange!


It had a very long neck. It had a very long tail. It used its tail like a whip. The tail could slap at a predator.


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