Format:Clasificarea regnurilor

Linnaeus 1735^[1]	Haeckel 1866^[2]	Chatton 1925^[3]	Copeland 1938^[4]	Whittaker 1969^[5]	Woese et al. 1990^[6]	Cavalier-Smith 1998^[7]	Cavalier-Smith 2015^[8]
2 regnuri	3 regnuri	2 domenii	4 regnuri	5 regnuri	3 domenii	2 domenii, 6 regnuri	2 domenii, 7 regnuri
(netratat)	Protista	Prokaryota	Monera	Monera	Bacteria	Bacteria	Bacteria
		Prokaryota	Monera	Monera	Archaea	Bacteria	Archaea
		Eukaryota	Protista	Protista	Eucarya	Protozoa	Protozoa
			Protista	Protista		Chromista	Chromista
Vegetabilia	Plantae		Plantae	Plantae		Plantae	Plantae
Vegetabilia	Plantae		Plantae	Fungi		Fungi	Fungi
Animalia	Animalia		Animalia	Animalia		Animalia	Animalia

Articol principal: Regn (biologie)#Rezumat.

^ Linnaeus, C. (1735). Systemae Naturae, sive regna tria naturae, systematics proposita per classes, ordines, genera & species.
^ Haeckel, E. (1866). Generelle Morphologie der Organismen. Reimer, Berlin.
^ Chatton, É. (1925). „Pansporella perplexa. Réflexions sur la biologie et la phylogénie des protozoaires”. Annales des Sciences Naturelles - Zoologie et Biologie Animale. 10-VII: 1–84.
^ Copeland, H. (1938). „The kingdoms of organisms”. Quarterly Review of Biology. 13: 383–420. doi:10.1086/394568.
^ Whittaker, R. H. (ianuarie 1969). „New concepts of kingdoms of organisms”. Science. 163 (3863): 150–60. Bibcode:1969Sci...163..150W. doi:10.1126/science.163.3863.150. PMID 5762760.
^ Woese, C.; Kandler, O.; Wheelis, M. (1990). „Towards a natural system of organisms:proposal for the domains Archaea, Bacteria, and Eucarya”. Proceedings of the National Academy of Sciences of the United States of America. 87 (12): 4576–9. Bibcode:1990PNAS...87.4576W. doi:10.1073/pnas.87.12.4576. PMC 54159 . PMID 2112744.
^ Cavalier-Smith, T. (1998). „A revised six-kingdom system of life”. Biological Reviews. 73 (03): 203–66. doi:10.1111/j.1469-185X.1998.tb00030.x. PMID 9809012.
^ Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M.; Thuesen, Erik V. (2015). „A higher level classification of all living organisms”. PLOS ONE. 10 (4): e0119248. Bibcode:2015PLoSO..1019248R. doi:10.1371/journal.pone.0119248. PMC 4418965 . PMID 25923521.

[Linnaeus1735-1] Linnaeus, C. (1735). Systemae Naturae, sive regna tria naturae, systematics proposita per classes, ordines, genera & species.

[Haeckel-2] Haeckel, E. (1866). Generelle Morphologie der Organismen. Reimer, Berlin.

[Chatton1925-3] Chatton, É. (1925). „Pansporella perplexa. Réflexions sur la biologie et la phylogénie des protozoaires”. Annales des Sciences Naturelles - Zoologie et Biologie Animale. 10-VII: 1–84.

[Copeland1938-4] Copeland, H. (1938). „The kingdoms of organisms”. Quarterly Review of Biology. 13: 383–420. doi:10.1086/394568.

[Whittaker1969-5] Whittaker, R. H. (ianuarie 1969). „New concepts of kingdoms of organisms”. Science. 163 (3863): 150–60. Bibcode:1969Sci...163..150W. doi:10.1126/science.163.3863.150. PMID 5762760.

[Woese1990-6] Woese, C.; Kandler, O.; Wheelis, M. (1990). „Towards a natural system of organisms:proposal for the domains Archaea, Bacteria, and Eucarya”. Proceedings of the National Academy of Sciences of the United States of America. 87 (12): 4576–9. Bibcode:1990PNAS...87.4576W. doi:10.1073/pnas.87.12.4576. PMC 54159 . PMID 2112744.

[CavalierSmith2004-7] Cavalier-Smith, T. (1998). „A revised six-kingdom system of life”. Biological Reviews. 73 (03): 203–66. doi:10.1111/j.1469-185X.1998.tb00030.x. PMID 9809012.

[8] Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M.; Thuesen, Erik V. (2015). „A higher level classification of all living organisms”. PLOS ONE. 10 (4): e0119248. Bibcode:2015PLoSO..1019248R. doi:10.1371/journal.pone.0119248. PMC 4418965 . PMID 25923521.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]