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Michael A. Ruggiero, Dennis P. Gordon, Thomas M. Orrell, Nicolas Bailly, Thierry Bourgoin, Richard C. Brusca, Thomas Cavalier-Smith, Michael D. Guiry, Paul M. Kirk, Erik V. Thuesen: A higher level classification of all living organisms. In: PLOS ONE. 10. Jahrgang, Nr.4, 2015, S.e0119248, doi:10.1371/journal.pone.0119248, PMID 25923521, PMC 4418965 (freier Volltext), bibcode:2015PLoSO..1019248R.
Michael A. Ruggiero, Dennis P. Gordon, Thomas M. Orrell, Nicolas Bailly, Thierry Bourgoin, Richard C. Brusca, Thomas Cavalier-Smith, Michael D. Guiry, Paul M. Kirk, Erik V. Thuesen: A higher level classification of all living organisms. In: PLOS ONE. 10. Jahrgang, Nr.4, 2015, S.e0119248, doi:10.1371/journal.pone.0119248, PMID 25923521, PMC 4418965 (freier Volltext), bibcode:2015PLoSO..1019248R.
T. Cavalier-Smith: The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa. In: International Journal of Systematic and Evolutionary Microbiology. Band52, Pt 2, März 2002, ISSN1466-5026, S.297–354, doi:10.1099/00207713-52-2-297, PMID 11931142.
W. E. Balch, L. J. Magrum, G. E. Fox, C. R. Wolfe, C. R. Woese: An ancient divergence among the bacteria. In: Journal of Molecular Evolution. Band 9, Nr. 4, 1977, S. 305–311. doi:10.1007/BF01796092, PMID 408502
T. Cavalier-Smith: The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa. In: International Journal of Systematic and Evolutionary Microbiology. Band52, Pt 2, März 2002, ISSN1466-5026, S.297–354, doi:10.1099/00207713-52-2-297, PMID 11931142.