抹香鲸科

The sperm whales in Odontoceti was closely related with baleen whales in Mysticeti, and then clustered with Delphinoidea and then with Ziphioidea.

其中抹香鲸总科与须鲸亚目聚合在一起，然后与海豚总科聚合再与喙鲸总科相聚。

NJ cluster analysis indicated that subclass Mysticeti is a monophyly whereas subclass Odontoceti is a polyphyly, including Delphinoidea, Physeteroidea, Ziphioidea and Platanistoidea.

NJ聚类分析结果与目前的主流观点基本相同，即须鲸亚目形成单系群而齿鲸亚目则为多系群，后者包括海豚总科、抹香鲸总科、喙鲸总科和淡水豚总科。

, and between L vexillifer and Neophocaena phocaenoides is 15. 03%(49/326bp). Two phylogenetic trees, constructed by using sequence data, suggest that Lipotes vexillifer does not share a direct common ancestor with Inia geoffrensis, thus provide molecular evidence in favor of the establishment of family Lipotidae, extant river dolphins might be a group of species with

系统发育分析结果表明：白暨豚与亚河豚没有直接共同的祖先，从而为白暨豚科的建立提供了有利的分子证据；现存的淡水豚类可能仅是外形上相似的物种群，Muizon（1984，1988a，1988b，1990）关于各类淡水豚分属于不同的总科的建议，从分子进化的角度看是完全可能的：抹香鲸类可能是最早从古鲸类中分化出来的类群。

Former classifications included in the family Physeteridae.

特别是旧分类中包括在抹香鲸科。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。