Teeny Tiny 500-Million-Year-Old Fossils Could Help Explain The Evolution of Spiders
Two tiny fossils, each smaller than an aspirin pill, contain fossilized nerve tissue from 508 million years ago. The bug-like Cambrian creatures could help scientists piece together the evolutionary history of modern-day spiders and scorpions. Still, it’s not clear exactly where these fossils – both specimens of the species Mollisonia symmetrica – fit on the arthropod … Read more