Fossils Show Odd Sea Creature's Half-Billion-year-old Brain

Researchers on Wednesday described fossilized remains unearthed in China showing in fine detail the brain structures of a bizarre group of sea creatures that were the top predators more than half a billion years ago. The fossils show an animal called Lyrarapax unguispinus that lived during the Cambrian Period, a pivotal juncture in the history of life on Earth when many major animal groups first appeared. It was a member of a group known as anomalocaridids - primitive relatives of...

© La Voix de l'Amérique - mercredi 16 juillet 2014