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Dino Fossil Blood Cells
Scientists have found microscopic structures believed to be fossilized red blood cells inside a fossilized leg bone from a dinosaur of the species *Aratasaurus museunacionali*, which lived in Brazil about 115 million years ago. They also found chemical evidence of the heme molecule associated with hemoglobin. The dinosaur is estimated to have been about four years old and 3.1 meters long when it died. The lead researcher stressed that the discovery does not prove that dinosaur DNA or intact genetic material has been found. The study was published in the journal *Proceedings of the National Academy of Sciences*.
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