Panthera youngi

Panthera youngi is a fossil cat species that was described in 1934; remains were excavated in a Sinanthropus formation in Choukoutien, northeastern China. Upper and lower jaws excavated in Japan's Yamaguchi Prefecture were also attributed to this species.It is estimated to have lived about 350,000 years ago in the Pleistocene epoch. It was suggested that it was conspecific with Panthera atrox and P. spelaea.