How do we know what dinosaurs looked like?
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Nobody today has ever seen a dinosaur in real life. We may have seen museum models and illustrations, but we don't know if dinosaurs really looked like that.
The best skeletons are only 90% complete, and even specialists called paleoartists have to make informed guesses.
Small structures named melanosomes vary in colour depending on their shape: Black ones are sausage-like, and reds are round. A well-preserved M.guid feather shone raven. Nanostructures also suggest it had an iridescent sheen.
Close relatives to the T. rex have protofeathers on their heads, backs, and tails, suggesting that the T. rex may have had too.
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