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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Ancient Argentavis soars again
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Ancient Argentavis soars again

机译：古代阿根廷人再次飙升

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Approximately 6 million years ago, in what is now Argentina, an enormous bird ranged across the region from the Andes Mountains to the pampas. Imagine a bird that has a condor-like body, weighs as much as a person, and has a wingspan nearly that of a small airplane. Imagine further that this bird has a 55-cm-long skull with a massive, eagle-like beak large enough to swallow a rabbit whole. Argentavis magnificens, the giant teratorn, fits this description. In addition to the general fascination stimulated by any huge (but safely extinct) carnivore, the fossils of this bird present paleontologists with a number of questions. Did it fly? If so, was it a flapper like a goose or a soarer like its relatives, the condors? Some of the questions about the flight in this huge bird have now been answered by computer models described in this issue of PNAS by Chatterjee et al. Thanks to this work, we now have a clearer picture of the flight abilities of this extinct creature.
机译：大约六百万年前，在现在的阿根廷，从安第斯山脉到南美大草原分布在该地区的一只大鸟。想象一下，一只鸟像秃鹰一样的身体，重达一个人，而翼展几乎相当于一架小型飞机。进一步想象一下，这只鸟的头骨长55厘米，上面长着巨大的鹰状喙，足以吞下整个兔子。巨大的小胎Argentavis magnificens符合此描述。除了任何巨大（但已灭绝）的食肉动物所激发的普遍迷恋之外，这只鸟的化石还给古生物学家带来了许多问题。它飞了吗？如果是这样，它是像鹅一样的拍击者，还是像其秃鹰一样的飙升者？ Chatterjee等人在本期PNAS中描述的计算机模型已经回答了有关这只大鸟飞行的一些问题。由于这项工作，我们现在对这种灭绝生物的飞行能力有了更清晰的了解。

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