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纪录片《进化缺环》 第16期 棘螈的趾
Clack returned to Cambridge with dozens of tetrapod fossils. Clack带着许多四足动物化石回到了剑桥 It meant that at last someone else would be able to do original work in the field of how we got our legs, 这意味着其他人终于可以对
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纪录片《进化缺环》 第17期 趾头的进化
The very earliest tetrapods did not, as all the textbooks claimed, have five fingers after all. 最早的四足动物并不像所有教科书中记载的那样，长着5个趾头 It suddenly raised the question: if the most basic assumption behind th
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纪录片《进化缺环》 第18期 推翻观点
If you look at the limbs what you find is that the joints are all angled 你可以看一下四肢，它们的关节都呈直角 so that the limb would have stretched out just to the sides. 所以四肢伸出来时只能贴住身体两侧 There's just
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纪录片《进化缺环》 第19期 从头开始研究
Stunned by these revelations 受到这些新成果的启发 Clack decided to check her findings against ichthyostega, Clack决定再次核查有关鱼石螈的结论 Jarvik's iconic first tetrapod, a fragment of which she'd also collected in Greenlan
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纪录片《进化缺环》 第20期 红色山丘
Renovo, Pennsylvania is what happens at the end of the railway line 宾夕法尼亚州的雷诺沃位于铁道线的终点 when the trains don't come any more, 火车已不再驶来 but the town is rich in something rare and precious. 但是这个小镇
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纪录片《进化缺环》 第21期 植物化石
Fossil plants. By finding them alongside Devonian tetrapods Daeschler had made a vital breakthrough. 植物化石。把它们和泥盆纪四足动物放在一起，Daeschler有了一个重大的突破 He could now reconstruct for the very first time
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纪录片《进化缺环》 第22期 含肺鱼
Oh it's completely new. By the time you get to the end of the Devonian for the very first time in Earth history 噢，它是全新的。到了泥盆纪末期，地球历史上首次出现 animals and plants are living on land in a significant, perman
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纪录片《进化缺环》 第23期 颚骨化石
When you see the tetrapods in the same fauna with these hyneria it, it really does 当你发现四足动物与这些含肺鱼处于同一个群落时， make you think well maybe escaping from large, large predators like this hyneria was, 你不禁要想
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纪录片《进化缺环》 第24期 对文塔螈的分析
He named the jaw livoniana and to prove it really was a transitional form 他将这块颚骨化石命名为文塔螈，为了证明它的确是过渡型物种 he ran it through something called a cladistic analysis. 他用所谓的谱系分支分析对
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纪录片《进化缺环》 第25期 对文塔螈的分析(2)
If we look at the tetrapod we have the pit now gone altogether 我们再看一下四足动物，凹陷已经彻底消失 and here's that lower blood vessel hole there in the tetrapod, 这里有个四足动物颚骨的下行血管出口 so in this res
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纪录片《进化缺环》 第26期 进化的真相
It also has one freakish feature: there are seven rows of teeth. 它还有一个很特别的特征：它有7排齿列。 It is unlike any other creature we know of. 这与我们所知的任何动物都不一样 This suggests it must be one of the hos
