The Position of the Ammonoidea within the Cephalopoda
The Position of the Ammonoidea within the Cephalopoda
复制标题
菊总科在头足类中的位置
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
T. Engeser
中科院分区：
文献类型：
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作者：
T. Engeser
关于Ammonoidea在鲸足类中的地位已经没有太多争议。几乎所有研究头足类的人都同意，与其他外耳蜗形头足类相比，Ammonoidea与Coleoidea的关系更密切，即，Nautiloidea（Jacobs and Landman，1994）.此外，也没有严重的疑问，即Ammonoidea是从杆菌衍生而来的（Jacobs和Landman，1994年）。然而，它仍然是值得的努力，以更准确地陈述的立场，Ammonoidea在鞘翅目分支（= Neoceanepoda）使用分支的方法。Berthold和Engeser（1987）和Engeser（1990 b）只是笼统地讨论了Ammonoidea的地位。
The position of the Ammonoidea within the Cephalopoda is no longer in much dispute. Almost all those who study cephalopods agree that the Ammonoidea are more closely related to the Coleoidea than to the other ectocochleate cephalopods, i.e., the Nautiloidea (Jacobs and Landman, 1994). There also can be no serious doubts that the Ammonoidea were derived from bactritids (Jacobs and Landman, 1994). However, it is still worth the effort to state more precisely the position of the Ammonoidea within the Coleoidea clade (= Neocephalopoda) using a cladistic approach. Berthold and Engeser (1987) and Engeser (1990b) discussed the position of the Ammonoidea only in general.