Dinosaur blood found in fossils for the first time

Paleontologists regularly discover fossilized dinosaur bones, but they sometimes locate footprints and prehistoric shells. On rare occasions, researchers have even identified the ancient indentations of a dinosaur’s skin or feathers. But fossilized cells? Researchers have long assumed such microscopic levels of preservation were impossible.But, once again, nature has proven otherwise.In a study published today in Proceedings of the National Academy of Sciences (PNAS), an international team of