'Truly unusual' fossilised fish sick found from 66 million years ago

Safe to say eating this meal didn't go swimmingly

Finding a lump of sick doesn't sound like a pleasant experience - but what if you discovered one that was 66 million years old?

That's exactly what happened to a fossil hunter in Denmark who was looking on the Cliffs of Stevns, which is a Unesco-listed site south of Copenhagen.

While out on a walk, self-confessed "fossil geek" Peter Bennicke found some unusual fragments, which turned out to be pieces of sea lily, in a piece of chalk.

He took them to a museum for closer inspection. The vomit was dated to the end of the Cretaceous era - when dinosaurs roamed the Earth.

This sick is around 66 million years old!

How did they know what the prehistoric vomit belonged to?

The Museum of East Zealand says the vomit is made up of at least two different species of sea lily, which were likely eaten by a fish that threw up the parts it could not digest.

Paleontologist Jesper Milan said the discovery was a "truly an unusual find", saying it helped to explain relationships in the prehistoric food chain.

During the period fish and sharks would eat sea lilies, which are hard to digest meaning they would then "regurgitate all the chalk bits", he explained.

Jesper says the discovery has sparked global interest. "This is the world's most famous piece of puke ever," he said.