Extinct 'mega claw' creature had spider-like brain 520 million years ago
Wednesday, October 16, 2013 - 12:01
in Paleontology & Archaeology
Research led by University of Arizona Regents' Professor Nick Strausfeld and London Natural History Museum's Greg Edgecombe has revealed that the ancestors of chelicerates (spiders, scorpions and their kin) branched off from the family tree of other arthropods – including insects, crustaceans and millipedes – more than half a billion years ago.