Domain (biology)

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Species Genus Family Order Class Phylum Kingdom Domain Life
The various levels of the biological classification system.
The hierarchy of biological classification's major eight levels. Life is divided into domains, which are subdivided into further groups. Intermediate minor rankings are not shown.

In biological taxonomy, a domain (also superregnum, superkingdom, or empire) is a the highest taxonomic rank of organisms, higher than a kingdom. Domain (or its synonyms) is the most inclusive of these biological groupings. Its divisions are Archaea, Eubacteria and Eukaryota. The arrangement of taxa reflects the fundamental evolutionary differences in the genomes. There are several modern alternative domain classifications of life. Among them are:

and the most recent,

As these groupings depend primarily on the analysis of genetic sequence data and cladistics, additional proposed arrangements are to be expected.

v • d • e
Taxonomic ranks
Domain or Magnorder
Superkingdom Superphylum/Superdivision Superclass Superorder Superfamily Superspecies
Kingdom Phylum/Division Class Order Family Tribe Genus Species
Subkingdom Subphylum Subclass Cohort Suborder Subfamily Subtribe Subgenus Subspecies
Branch Infraphylum Infraclass Legion Infraorder Alliance Infraspecies
Microphylum Parvclass Parvorder
Retrieved from "http://en.wikipedia.org/wiki/Domain_%28biology%29"
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