Scientists have discovered a 100-million-year-old fossil of a 'zombie worm'.
A research team at Plymouth University found evidence of the Osedax by looking at a prehistoric carcass of a marine dinosaur.
It ate the bones of dead whales and was previously thought to only be around 45 million years old.
The parasite, which doesn't have a mouth or digestive system, feeds by sucking fats and collagen through long tendrils.
