Paleontologists have discovered dinosaur vessels.

They are still filled with blood. North Carolina scientists have discovered blood vessels in a Brachylophosaurus fossil. This herbivorous dinosaur, about 9 meters long, lived 80 million years ago. Paleontologists studied the find using high-resolution spectroscopy. This helped discover several proteins that can be found in blood vessel cells. Scientists note that the soft tissues are preserved in excellent condition for their age. This discovery proves that organic structures can remain intact for millions of years without becoming fossilized.