At the edge of a sprawling grassland, a pair of hoofed grazers resembling horses, an antelopelike notoungulate and a ground sloth feed quietly, oblivious to their impending doom.

在辽阔边缘，有一对貌似马儿有蹄食动、一只很像羚羊南方有蹄类和一只在静静觅食，没有注意到大祸即将临头。