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According to his analysis of the Bachia family tree, the toed species re-evolved toes from toeless ancestors and, what is more, digit loss and gain has occurred on more than one occasion over tens of millions of years.

对 Bachia 家谱的分析,有脚的物种从没有脚的祖先重新进化出了脚,另外,头的失去在几千万年间不止出现了一次。

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