6600万年前的海边“走地鸡”,揭开现代鸟类进化谜题( 三 )


不过 , 这就是今鸟类在末日生存的秘技了吗?也许并非如此 。 毕竟附近的地层中还发现过大型的原始鸟类化石 , 它们也住在海边 , 却没能幸存 。 相比之下 , 本次发现的今鸟类化石体型小巧得多 , 或许正是因为它们身体小、食量小 , 所以才能够用“节衣缩食”的方式挨过世界末日 。
这样看来 , 不管是今天还是远古时期 , “少吃点”都不失为动物活下去的一个秘密……
少吃点哦 | 《千与千寻》
作者名片
排版:凝音
题图来源:Nature
参考文献:
[1] Daniel J. Field1, Juan Benito, Albert Chen, John W. M. Jagt & Daniel T. Ksepka (2020). Late Cretaceous neornithine from Europe illuminates the origins of crown birds. Nature
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[3] Agnolín, F.L.; Egli, F.B.; Chatterjee, S.; Marsà, J.A.G (2017). "Vegaviidae, a new clade of southern diving birds that survived the K/T boundary". The Science of Nature. 104 (87): 87. doi:10.1007/s00114-017-1508-y
[4] Keutgen, N (2018). A bioclast-based astronomical timescale for the Maastrichtian in the type area (southeast Netherlands, northeast Belgium) and stratigraphic implications: the legacy of PJ Felder. Neth. J. Geosci. 97, 229–260.
[5] Claramunt, S. & Cracraft, J (2015). A new time tree reveals Earth history’s imprint on the evolution of modern birds. Sci. Adv. 1, e1501005.
[6] Budd, G. E. & Mann, R. P (2020). The dynamics of stem and crown groups. Sci. Adv. 6, eaaz1626.
[7] Dyke, G. J. et al. Europe’s last Mesozoic bird. Naturwissenschaften 89, 408–411 (2002).
[8] Larson, D. W., Brown, C. M. & Evans, D. C (2016). Dental disparity and ecological stability in bird-like dinosaurs prior to the end-Cretaceous mass extinction. Curr. Biol. 26, 1325–1333.
【6600万年前的海边“走地鸡”,揭开现代鸟类进化谜题】[9] Field, D. J. et al (2018). Early evolution of modern birds structured by global forest collapse at the end-Cretaceous mass extinction. Curr. Biol. 28, 1825–1831.

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