Now this is an old blood system! Paleontologists have identified the cardiovascular system of those little prehistoric critters: arthropods.
The specific species is Fuxianhuia protensa, and was originally found in China. It’s been researched on for a couple of years now, and is one of the most remarkable specimens found as it portrays the brain, nervous system, guts and now blood vessels.
The fossil is the very very VERY distant relative of milipedes, lobsters and spiders. The latest analysis revealed a dark carbon trace which revealed the blood vessels to the eyes, antennae, brain and legs.
The heart of the arthropod was quite high up in the body, suggesting it was essential the creature had sufficient blood flow to these important areas.
Read more about this little amazing fossil on Daily Mail