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Classifying the diversity of organic life. Diagrammatic illustration of the biological classification system.

Classification levels:

  • Species
  • Genus
  • Family
  • Order
  • Class
  • Phylum
  • Kingdom
  • Domain
  • Life ( organic life)

About the Domains/Kingdoms

This diagram implies 3 Domains / 6 Kingdoms (Woese et al. 1990):

  • Archaea, Domain (and Kingdom)
  • Eukarya, Domain
    • Protista, Kingdom
    • Fungi, Kingdom
    • Animalia, Kingdom
    • Plantae, Kingdom
  • Bacteria, Domain (and Kingdom)


  1. Carl R. Woese, Otto Kandler, Mark L. Wheelis: "Towards a Natural System of Organisms: Proposal for the domains Archaea, Bacteria, and Eucarya", doi:10.1073/pnas.87.12.4576


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Other versions

See also:

  • Image:Scientific classification.png


Illustration credit: Peter Halasz. ( User:Pengo)

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