Taxon

In biology, the taxon (back-formation from taxonomy; pl.: taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based ("Linnaean") nomenclature (much less so under phylogenetic nomenclature).

Extends: Organisms, Taxa, [Biological classification](https://wikipedia.org.ai/Biological classification), [Botanical nomenclature](https://wikipedia.org.ai/Botanical nomenclature), [Zoological nomenclature](https://wikipedia.org.ai/Zoological nomenclature)