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.

在辽阔原的边缘，有一对貌似马儿的有物、一只很像羚羊的南方有类和一只地獭正在静静觅，没有注意到大祸即将临头。