Question: Panthera youngi is known from Choukoutien, northeastern China and Japan, and lived about 350,000 years ago in the Pleistocene epoch, Harington, 1969 suggested that the American lion, the Eurasian cave lion and the large Chinese "Panthera youngi" are conspecific, The American lion ("Panthera leo atrox" or "P. atrox" ) – also known as the North American lion, Naegele’s giant jaguar or American cave lion – is an extinct lion of the family Felidae, endemic to which location during the Pleistocene epoch?
Sentence (from "American lion"): It was part of the abundant Pleistocene megafauna, a wide variety of very large mammals that lived at the time.
Relevant evidence: No