Surprise Discovery Reveals Earliest Known Ancestor of Scorpions And SpidersSurprise Discovery Reveals Earliest Known Ancestor of Scorpions And Spiders - ScienceAlert
sciencealert.comSubmitted by sciencealert6623 in science
A segmented little beastie that swam Earth's seas nearly half a billion years ago has now been identified as the grandparent of spiders, scorpions, and horseshoe crabs.