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The 1998 model

Kingdom Animalia

In 1993, Cavalier-Smith classified Myxozoa as a protozoan parvkingdom. By 1998, he had reclassified it as an animal subkingdom. Myxozoa contains three phyla, Myxosporidia, Haplosporidia, and Paramyxia, which were reclassified as animals along with Myxozoa. Likewise, Cavalier-Smith reclassified the protozoan phylum Mesozoa as an animal subkingdom.

In his 1998 scheme, the animal kingdom was divided into four subkingdoms:

He created five new animal phyla:

and recognized a total of 23 animal phyla, as shown here:

The eighth kingdom: Archezoa

In 1983, Cavalier-Smith adapted the term Archezoa, previously used by Haeckel, Perty, and for protists that lack mitochondria.[2] TInitially, the taxon included the quite unrelated metamonads and microscopridia, and expanded to include other unreleated taxa such that the term referred to many different groupings of protists. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] He originally considered it as a subkingdom, but by 1989, with the establishment of Chromista as separate kingdom, he treated it as a kingdom.[19]

Composition of Archezoa [20]
1983a1983b1987198919901991199319951996199719981999
Diplomonads++++++++++++
Retortamonads++++++++++++
Oxymonads++++++++++++
Microspora+++++++++
Hypermastigids+++
Trichomonads+++
Mastigamoebids++++++
Pelomyxa+++++
Entamoeba+++++
Phreatamoeba++
Trimastix+

Archezoa is now defunct.[21] He now assigns former members of the kingdom Archezoa to the phylum Amoebozoa.[22]

  1. Lỗi chú thích: Thẻ <ref> không hợp lệ; không có nội dung trong ref có tên 1998-08
  2. Cavalier-Smith, T. (1987). "Eukaryotes with no mitochondria". Nature. 326 (6111): 332–333. Bibcode:1987Natur.326..332C. doi:10.1038/326332a0. PMID 3561476.
  3. Cavalier Smith, T. 1983. A six-kingdom classification and a unified phylogeny. Endocytobiology 2:1027–1034.
  4. Cavalier Smith, T. 1987. Eukaryotes with no mitochondria. Nature (London) 326:332–333.
  5. Cavalier Smith, T. 1987 The origin of eukaryote and archaebacterial cells. Annals of the New York Academy of Sciences 503:17–54.
  6. Cavalier Smith, T. 1989. Archaebacteria and Archezoa. Nature (London) 339:100–101.
  7. Cavalier Smith, T. 1990. Microorganism megaevolution: integrating the fossil and living evidence. Revue de Micropalêontologie 33:145–154.
  8. Cavalier Smith, T. 1991. Archamoebae: the ancestral eukaryotes? Biosystems 25:25–38.
  9. Cavalier Smith, T. . The evolution of cells. pp 271–304 in S. Osawa and T. Honjo, eds. Evolution of life. Springer, Berlin.
  10. Cavalier Smith, T. 1992. Percolozoa and the symbiotic origin of the metakaryote cell. Endocytobiology 5:399–406.
  11. Cavalier Smith, T. Kingdom Protozoa and its 18 Phyla. Microbiological Reviews 57:953–994.
  12. Cavalier Smith, T. 1995. Zooflagellate phylogeny and classification. Cytology 37:1010–1029.
  13. Cavalier Smith, T. 1997. Amoeboflagellates and mitochondrial cristae in eukaryote evolution: megasystematics of the new protozoan subkingdoms Eozoa and Neozoa. Archiv für Protistenkunde 147:237–258.
  14. Cavalier Smith, T. 1997. Zooflagellate phylogeny and the evolution and classification of protozoa. Page 65 in Programme and abstracts, Tenth International Congress of Protozoology, Sydney.
  15. Cavalier Smith, T. 1998. A revised six–kingdom system of life. Biological Reviews of the Cambridge Philosophical Society 73:203–266.
  16. Cavalier Smith, T. 1999. Zooflagellate phylogeny and the systematics of protozoa. Biological Bulletin (Woods Hole) 196: 393–395.
  17. Cavalier-Smith, T.and Chao, E. 1995. The opalozoan Apusomonas is related to the common ancestor of animals, fungi and choanoflagellates. Proceedings of the Royal Society of London B, Biological Sciences 261:1–6.
  18. Cavalier-Smith, T.and Chao, E. 1996. Molecular diversity of the free-living archezoan Trepomonas agilis and the nature of the first eukaryote. Journal of Molecular Evolution 43:551–563.
  19. Lỗi chú thích: Thẻ <ref> không hợp lệ; không có nội dung trong ref có tên nat1989
  20. Patterson, D. J. 1999. The diversity of eukaryotes. American Naturalist, Supplement 65: 96-124.
  21. Cavalier-Smith, T.; Chao, E. E. (1996). "Molecular phylogeny of the free-living archezoan Trepomonas agilis and the nature of the first eukaryote". Journal of Molecular Evolution. 43 (6): 551–62. Bibcode:1996JMolE..43..551C. doi:10.1007/BF02202103. PMID 8995052. S2CID 28992966.
  22. Cavalier-Smith, T. (2004). "Only six kingdoms of life". Proceedings of the Royal Society B: Biological Sciences. 271 (1545): 1251–62. doi:10.1098/rspb.2004.2705. PMC 1691724. PMID 15306349.