The hierarchy of biological classification’s eight major taxonomic ranks. A domain contains one or animal kingdom classification chart pdf kingdoms.
Intermediate minor rankings are not shown. Kingdoms are divided into smaller groups called phyla.
Some recent classifications based on modern cladistics have explicitly abandoned the term “kingdom”, noting that the traditional kingdoms are not monophyletic, i. When Carolus Linnaeus introduced the rank-based system of nomenclature into biology in 1735, the highest rank was given the name “kingdom” and was followed by four other main or principal ranks: class, order, genus and species. Later two further main ranks were introduced, making the sequence kingdom, phylum or division, class, order, family, genus and species. Superkingdom may be considered as an equivalent of domain or empire or as an independent rank between kingdom and domain or subdomain.
Protostomia and Deuterostomia in the classification of Cavalier-Smith. A phylogenetic tree based on rRNA data showing Woese’s three-domain system.