Scientists have found two specimens of a 444 million-year-old "inside-out" fossil with well-preserved soft tissue, according to a new study. Unlike most fossils, the creature's muscles and guts ...

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

A paleontologist discovered a new species of fossil from 444 million years ago she calls an “inside-out, legless, headless wonder.” This new species of multi-segmented fossil and has officially been ...