Jawbone dredged up from the seafloor expands the range of a mysterious species of ancient human

A jawbone dredged up from the seafloor off Taiwan belongs to an ancient human species known as Denisovans, protein fragments extracted from the fossil have revealed.

​ A jawbone dredged up from the seafloor off Taiwan belongs to an ancient human species known as Denisovans, protein fragments extracted from the fossil have revealed. Read More Breaking News, Latest News and Videos | CNN