菊石的灭绝

这些像鹦鹉螺一样的海洋动物在其漫长历史末期的外壳变化表明,它们正在与更灵活、能压碎外壳的掠食者进行一场必败的战斗

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大众科学 Magazine Vol 249 Issue 4This article was originally published with the title “The Extinction of the Ammonites” in 大众科学 Magazine Vol. 249 No. 4 (), p. 136
doi:10.1038/scientificamerican1083-136
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