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    Wikipedia
    https://zh.wikipedia.org > zh-cn > 分类阶元
    分类阶元 - Wikipedia
    分类阶元也称作分类阶层、分类层级、分类等级、分类级别等，可简称为阶元，是生物学上进行生物分类时确定生物共性范围的上下等级、大小门类，即根据物种间演化关系的亲疏，使用不同的等级排列，系统化地将物种分门别类的层级体系。现代生物分类依次采用界、门、纲、目、科、属、种七个从高到低、基本且必要的主要阶元，有时界之上的域也算一个必要阶元；为做到更加详细完备，学术界还常在这些主要阶元之间设置次要阶元，如每个主要阶元上下的“总×”、“亚×”和“下×”等阶元，以及并不算主流分类的支和族等非正式阶元。每个阶元的学名通常以拉丁文表述，但一般为了描述或写作方便，除了属和种这两个最基层的级别需要被明示，其他级别是不被明示的。
    Overview

    In biology, taxonomic rank (which some authors prefer to call nomenclatural rank because ranking is part of nomenclature rather than taxonomy proper, according to some definitions of these terms) is the relative or absol… 展开

    History

    While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behavior, two important new methods developed in th… 展开

    Main ranks

    In his landmark publications, such as the Systema Naturae, Carl Linnaeus used a ranking scale limited to kingdom, class, order, genus, species, and one rank below species. Today, the nomenclature is regulated by the … 展开

    Ranks in zoology

    There are rules applying to the following taxonomic ranks in the International Code of Zoological Nomenclature: superfamily, family, subfamily, tribe, subtribe, genus, subgenus, species, subspecies.
    The Internationa… 展开

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