Breakthrough discovery: Red blood cells from 115 million years ago found in dinosaur bones

In northeastern Brazil, the discovery of Aratasaurus dinosaur bones revealed microscopic structures resembling red blood cells, challenging previous beliefs about fossil preservation. Researchers found evidence of heme, indicating biological origins, which opens new avenues for paleontological studies. This breakthrough allows scientists to gain insights into the physiology and metabolism of extinct species, potentially reshaping our understanding of molecular survival over geological time. The bones belonged to a young dinosaur, about 3 meters long, highlighting the significance of this finding in studying prehistoric life.