鱼是怎样长出脚的 |
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引用本文: | 曹淑芬.鱼是怎样长出脚的[J].科学之友,2004(5):86-86. |
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作者姓名: | 曹淑芬 |
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摘 要: | Atwo-lanehighwayinAmericahashelpedscientiststoexplainoneoflife'smostenduringmysteries:howfishgrewthefingersthatenabledthemtocrawloutontoland.TheroadinPennsylvaniahappenedtobecutoutof365mil-lion-year-oldrockinwhichtheresearchersfoundtheoldestknownfos-silis…
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关 键 词: | 鱼 脚 动物演化 化石 |
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