A team of palaeontologists from China, the United States and Sweden found a well-preserved fossil of ancient fish that lived in the area 419 million years ago.
The fossil was found Qujing City, Yunnan Province.
The fish, named Entelognathus primordialis, was a 20-cm-long placoderm. The placoderm is an extinct armour-plated fish and the first known animals to evolve true jaws. Their head and thorax were covered by moveable armoured plates and the rest of the body, depending on the species, was covered with scales or skin.
Read more
