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.
根据他对 Bachia 家谱分析,有
物种从
有
重新进化出了
,另外,
头
得到和失去在几千万年间不止出现了一次。