Plathelminthes and Plathelminthomorpha — paraphyletic taxa
Plathelminthes and Plathelminthomorpha — paraphyletic taxa
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Plathelminthes 和 Plathelminthomorpha — 并系类群
DOI：
10.1111/j.1439-0469.1996.tb00808.x
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发表时间：
2009
影响因子：
1.9
通讯作者：
G. Haszprunar
中科院分区：
文献类型：
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作者：
G. Haszprunar
在此基础上，重新分析了platelminthororpha （platelmintha和Gnathostomulida）的单系概念。根据新的形态学和分子证据，我们认为这两个类群都是副属组合。无形虫(Xenoturbellida？（Nemertodermatida和Acoela）被认为是双侧茎系最早的分支，主要缺乏成对的大脑神经节、正交神经系统和超滤肾。其次是Plathelminthes sensu stricto（即rhabditophhoran turbellarians和Neodermata）， Catenulida和Gnathostomulida，后者可能是Syndermata （Rotifera和Acanthocephala）的姐妹群。各自的特征，以及对拟议的双侧门茎种的含义进行了概述和讨论。
The concept of monophyly of Plathelminthes and Plathelminthomorpha (Plathelminthes and Gnathostomulida) is critically re-analysed. Based on new morphological and molecular evidence, it is concluded that both taxa are paraphyletic assemblages. The Acoelomorpha (Xenoturbellida?, Nemertodermatida and Acoela) are considered as the earliest offshoot of the bilaterian stem line, primarily lacking paired cerebral ganglia, an orthogonal nervous system and ultrafiltration nephridia. They are followed by Plathelminthes sensu stricto (i.e. the rhabditophoran turbellarians and Neodermata), Catenulida, and Gnathostomulida, the latter group is probably the sister group of the Syndermata (Rotifera and Acanthocephala). The respective characters, as well as the implication for the proposed stem species of the Bilateria are outlined and discussed.