What feature in New Mexico represented one of the southern extremities of the bear's documented North American range?

Answer

White Sands National Monument (now National Park)

White Sands National Monument in New Mexico, characterized by gypsum sand dunes, yielded evidence of the giant short-faced bear and represents one of the southern documented extremes.

What feature in New Mexico represented one of the southern extremities of the bear's documented North American range?
locationfaunabearExtinct AnimalUrsus