千奇百怪的中生代怪兽令约翰·厄普代克不禁问道:大自然的生物演化到底创造了什么?阿马加龙(前页)的脊椎骨上伸出两排奇特的棘刺,就像1959年出产的凯迪拉克轿车的尾翼,但这形态除了赚取回头率外意义甚微。自从1991年研究人员宣布发现这种蜥脚类恐龙以来,古生物学家一直在琢磨这些纤细骨棒的功能。假若是用来抵御捕食者,收效会很有限。或许骨棒上曾经 The strange Mesozoic Monsters make John Updike wonder: What did the biological evolution of nature create? Two rows of peculiar spines on the vertebrae of Amagallon (previous page), like the Cadillac produced in 1959 The tail of the car, but this form of meaning in addition to earn little later. Paleontologists have been pondering the function of these slender bones since researchers announced the discovery of the sauropod in 1991. If it is used to resist predators, the effect will be very limited. Perhaps the bone stick once