短颈龙（属名：Brachauchenius）是种上龙类，生存于白垩纪的美国与哥伦比亚，约1亿1000万年前。短颈龙是已知北美洲最后出现的上龙类，身长约12米。
此外，他们还指出，像腕龙这样有着超长脖子的恐龙，“与短颈生物相比，能够节省觅食所需总能量的80%。”
" Beyond that, they also predicted that the super long neck of a dino such as Brachiosaurus would "reduce the overall cost of foraging by 80 per cent, compared with a minimally necked individual.
短颈潘龙，这个长颈、长尾、温顺的巨型蜥脚类动物正将腹部至于大象腿一样的肢体上休息。它们主要关心的就是如何吃到最高那棵树上最美味的叶子。
The long-necked, long-tailed, gentle-giant sauropods have midriffs resting easily on elephant-like limbs – these guys' main concern was reaching the tastiest leaves in the tallest trees.
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