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tyrannosaur
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英式拼寫

It's an incredible idea. But most experts now believe that today's birds are the direct descendants of ancient dinosaurs.
So does that mean birds actually are dinosaurs?
Yes. Absolutely.
How can you be sure about that？
You have evidence from the skeletal anatomy. You have evidence from the shape of the eggs and the microstructure of the eggshell, the discovery about a wealth of feathered dinosaurs, animals that are unquestionably dinosaurs and yet have feathers that looked just like the feathers of modern birds.
It's a discovery that revolutionises the way we see dinosaurs. Even some tyrannosaurs were feathered. But the relationship between birds and dinosaurs can tell us much more than simply what they may have looked like.

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