Fossils of 444 million-year-old creatures whose bodies were preserved "inside-out" have been discovered in South Africa.

A professor has published details of a rare "inside-out, legless, headless wonder" fossil from 444 million years ago, which ...

A new species of fossil from 444 million years ago that has perfectly preserved insides has been affectionately named "Sue" ...

A new species of fossil is 444 million years-old with soft insides perfectly preserved. Research 'ultramarathon' saw palaeontologist puzzled by bizarre fossil for 25 years.

Narrator: Now, most land animals breathe by expanding and contracting ... Basically, a turtle's skeleton is inside out. And just like you can't take a skeleton out of a person, right, you can ...