A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that ...

In a mountainous forest of southeastern Asia, a "dwarf"-like creature tucked its hairy body into the hollow of a tree. Its ...

Over 500 million years ago, a small marine creature swam through Cambrian waters. Its name: Mollisonia symmetrica. Long ...

The tiny 'backward' brain of an ancient sea creature hints that spider ancestors might have gotten their start in the ocean.