New supraordinal classification of Foraminifera: Molecules meet morphology
New supraordinal classification of Foraminifera: Molecules meet morphology
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DOI：
10.1016/j.marmicro.2013.04.002
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发表时间：
2013-04-01
影响因子：
1.9
通讯作者：
Tyszka, Jaroslaw
中科院分区：
文献类型：
--
作者：
Pawlowski, Jan;Holzmann, Maria;Tyszka, Jaroslaw
多年来的分子系统发育研究已经证明了传统的基于形态学的有孔虫分类的局限性。尽管分子数据不断积累，但尚未提出结合这些数据的替代更高级别的分类系统。在这里，我们提出了一种新的有孔虫类超序分类，其基于更新的 SSU rDNA 系统发育，并描述了该类群进化中的主要形态趋势。根据新系统，多腔目分为两个新纲：管丘脑目和球丘脑目。具有凝集或有机壁测试的裸露和单室有孔虫被排列成“单环酰胺”的并系组合。新系统保留了一些多室钙质目，例如 Rotaliida、Miliolida、Robertinida 和 Spirillinida，尽管它们的定义在某些情况下已被修改以包括凝集类群。浮游生物目 Globigerinida 的代表暂时划入 Rotaliida 目。凝集的 Textulariida 可能是并系的。 Lagenida 目的位置不确定，因为可靠的分子数据仅适用于一种物种。新的分类系统将不同的目或科分开，这些目或科在基本室形状、主要卷绕模式以及连续孔之间的距离方面有所不同。看来这些特征比传统分类中使用的壁组成和结构更符合有孔虫的主要进化趋势。 (C) 2013 Elsevier B.V. 保留所有权利。
The limitations of a traditional morphology-based classification of Foraminifera have been demonstrated by molecular phylogenetic studies for several years now. Despite the accumulation of molecular data, no alternative higher-level taxonomic system incorporating these data has been proposed yet. Here, we present a new supraordinal classification of Foraminifera based on an updated SSU rDNA phylogeny completed with the description of major morphological trends in the evolution of this group. According to the new system, multi-chambered orders are grouped in two new classes: Tubothalamea and Globothalamea. Naked and single-chambered Foraminifera possessing agglutinated or organic-walled tests are arranged into a paraphyletic assemblage of "monothalamids". The new system maintains some multi-chambered calcareous orders, such as Rotaliida, Miliolida, Robertinida and Spirillinida, although their definitions have been modified in some cases to include agglutinated taxa. The representatives of the planktonic order Globigerinida are tentatively included in the order Rotaliida. The agglutinated Textulariida are probably paraphyletic. The position of the order Lagenida is uncertain because reliable molecular data are only available for one species. The new classification system separates orders or families, which differ in basic chamber shapes, prevailing mode of coiling and distance between successive apertures. It appears that these features correspond better to the main evolutionary trends in Foraminifera than wall composition and structure, both used in traditional classification. (C) 2013 Elsevier B.V. All rights reserved.