Fossils from China's Chengjiang beds reveal that early vertebrate ancestors, jawless fish called myllokunmingids, possessed ...
The earliest recorded vertebrates had four eyes to escape predators in the ancient Cambrian ocean, according to ...
New fossil evidence from China suggests that some of our vertebrate ancestors had four eyes. The study, published in Nature, takes a closer look at a structure found in multiple 518 million-year-old ...