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Scientists Find Possible Blood Cell Traces in Dinosaur Bone

A dinosaur bone has tiny shapes that may be traces of blood cells.

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Science news editorial illustration for Dinosaur Fossil Holds Possible Traces of Ancient Blood Cells

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Source: ABC News, 2026-11-03.

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Read and understand · 1/3Where was the dinosaur bone found?

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Brazil. The first paragraph says the bone was found in Brazil.

Clue: Scientists have studied a dinosaur bone found in Brazil. The fossil is about 115 million years old.

Read and understand · 2/3What did the team say the tiny shapes may be?

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Remains of red blood cells. The second paragraph describes the shapes as possible red blood cell remains.

Clue: The team found tiny shapes inside the bone. The shapes may be the remains of red blood cells. The team also found traces of a chemical linked to blood.

Read and understand · 3/3Why is more research needed?

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Other experts are not sure the shapes were blood cells.. The third paragraph says some experts are unsure how to identify the shapes.

Clue: Other experts are not sure that the shapes were blood cells. More research is needed to understand the find.

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What might the tiny shapes be, and why is the finding still uncertain?

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They might be remains of red blood cells. Other experts are not sure they were blood cells, so more research is needed.

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