而包括所有寒武纪壳类动物在内的大多数动物都是由三层细胞的晶胚发展而来。
The tracks found by Mr Liu look suspiciously like those left by modern sea anemones which,despite their sedentary appearance, do move around slowly.
刘发现的这些足迹疑似现代的海葵的足迹。海葵虽然看起来不怎么活动,但它们确实会慢慢地四处游动。
That is not strong evidence that Ediacarans were Cnidarians, but it is something.
这虽然不能有力地证明埃迪卡拉动物属于刺胞动物,但它的确是一个重要的发现。
Yet if that is the right interpretation, it leaves the question of what evolved into thetrilobites and their kind as mysterious as ever.
不过倘若这样的解释是正确的,三叶虫和它的同类由何而来的问题将仍然神秘晦涩,一如往昔。
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