The definitive (and gruesome) proof came with the discovery of the human muscle protein myoglobin in the fossilized human feces of a prehistoric Anasazi pueblo Indian.

• 决定性（且恐怖）的证据，来自史前阿纳萨齐文化培布罗印第安人的粪便化石，里面含有肌红素，也就是人类肌肉的蛋白质。野蛮？