Rethinking the Cambrian Explosion: Before Shells and Limbs, There Was the Brain

A new hypothesis proposes that the Cambrian Explosion -- the sudden burst of animal diversity 500 million years ago -- was not driven by shells or limbs, but by the early evolution of complex nervous systems. The post Rethinking the Cambrian Explosion: Before Shells and Limbs, There Was the Brain appeared first on Sci.News: Breaking Science News.