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Fossilised red blood cells found in 115m-year-old dinosaur’s bone, say scientists

But that is what researchers are claiming to have discovered after analysing the hind leg bones of a small, meat-eating dinosaur called an Aratasaurus that lived and died in what is now north-eastern Brazil 115m years ago.

✦ Extractive summary — built from the sources' own reporting•From 1 source•1 min read•Updated November 2, 2026, 8:00 PM UTC

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