Scientists just found a 520-million-year-old fossil in China with its brain and guts still perfectly preserved. This tiny larva, named Youti yuanshi, is blowing experts’ minds because soft tissues like brains almost never survive this long. Thanks to some high-tech X-ray scans, they got a 3D look at its insides—something never seen before in fossils this old. Turns out, ancient arthropods were way more complex than anyone thought! Nature is wild, right? #Science #FossilFind #AncientLife