Despite differences in shape and size all insects are characterized by a body organization that includes three units: a head, thorax and abdomen (panels A-B). In contrast all spiders (and other ...

Rare fossils preserving the brains of creatures living more than half a billion years ago shed new light on the evolution of arthropods. Exquisitely preserved fossils left behind by creatures living ...

Scientists revealed new research based on a cache of fossils that contains the brain and nervous system of a half-billion-year-old marine predator from the Burgess Shale called Stanleycaris.