The Five-Eyed 500-Million-Year-Old Fossil That Defies Classification
In a world where most prehistoric creatures can be tucked into neat textbook boxes, one animal refuses to sit still. The five-eyed oddity from the Cambrian – best known from sites like Canada’s Burgess Shale and China’s Chengjiang – keeps slipping between categories, teasing scientists with traits that look both familiar and alien. It sports ...
