What caused the Pleistocene Mass Extinction?

[GrizzlyClaws]

Tiger originated from China, a temperate place where the climate was similar to the Southern Europe and the United States where Panthera fossilis and Panthera atrox used to live.

Since the radical change in the ecosystem from the Europe to the Siberia then to the North America was likely the cause that led to the extinction for the lion-like big cats.

PS, I remember that the Mammals of the Soviet Union described that the Manchuria got richer prey base than the Siberia.

Except Manchuria, the whole Siberia was always remained frigging cold where lacked of the lush vegetation to support those larger herbivores.

Remember Mammuthus Sungari? Although it is actually an invalid species, also a junior synonym for Mammuthus trogontherii, but it is true that the steppe Mammoth got larger in Manchuria than they used to be in Siberia. Reply