Single posterior cilium without mastigonemes, present in at least one life cycle stage or secondarily lost; with a pair of kinetosomes or centrioles, sometimes modified; flat (rarely tubular) mitochondrial cristae in the unicellular stage. Two inclusive clades, Holozoa and Holomycota, comprise the lion's share of euks species diversity. Breviatea & Apusomonadida are sister/basal lineages (Obazoa clade = Opisthokonta + Breviatea & Apusomonadida, see Brown et al., 2013).
Adl S. M., Simpson A. G., Lane C. E. et al. The revised classification of eukaryotes. J. Eukaryot. Microbiol. 2012. V. 59. P. 429–493.

Aleshin V.V., Konstantinova A.V., Mikhailov K.V. et al. Do we need many genes for phylogenetic inference? Biochemistry. 2007. V. 72 (12). P. 1313–1323. https://doi.org/doi:10.1134/S000629790712005X

Brown M.W., Sharpe S.C., Silberman J.D. et al. Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads. Proceedings of the Royal Society of London B: Biological Sciences. 2013. V. 280 (1769). P. 17–55. https://doi.org/10.1098/rspb.2013.1755

Brunet T., King N. The origin of animal multicellularity and cell differentiation. Dev Cell. 2017. 43(2): 124–140. https://doi.org/10.1016/j.devcel.2017.09.016

Bütschli O. Vorlesungen über vergleichende Anatomie, Volumes 5-6. Berlin, Engelmann, 1910. 401 p.

Cavalier-Smith T. A revised six-kingdom system of life. Biological Reviews. 1998. V. 73 (3). P. 203–266. https://doi.org/10.1111/j.1469-185X.1998.tb00030.x

Cavalier-Smith T. Early evolution of eukaryote feeding modes, cell structural diversity, and classification of the protozoan phyla Loukozoa, Sulcozoa, and Choanozoa. European Journal of Protistology. 2013. V. 49 (2). P. 115–178. https://doi.org/10.1016/j.ejop.2012.06.001

Cavalier-Smith T. The origin of fungi and pseudofungi. In: Evolutionary biology of Fungi. Cambridge: Cambridge University Press; 1987:339–353.

Doweld A. Olpidiomycota. Index Fungorum. 2013.

Doweld A. Prosyllabus Tracheophytorum, Tentamen systematis plantarum vascularium (Tracheophyta). 2001.

Galindo L.J., Lopez-Garcia P., Torruella G. et al. Phylogenomics of a new fungal phylum reveals multiple waves of reductive evolution across Holomycota. Nature Communications. 2021. V. 12. P. 4973. https://doi.org/10.1038/s41467-021-25308-w

Grant R. E. Animal kingdom. In: R. B. Todd (ed.). The cyclopaedia of anatomy and physiology. V. 1. London, 1836: pp. 107-118.

Haeckel E. Die Gastrea-Theorie, die phylogenetische Classification des Tierreichs und die Homologie der Keimblatter. Jenaische Zeitschrift fur Naturwissenschaft. 1874. V. 8. P. 1–55.

Hehenberger E., Tikhonenkov D.V., Kolisko M. et al. Novel predators reshape Holozoan phylogeny and reveal the presence of a two-component signaling system in the ancestor of animals. Current Biology. 2017. V. 27 (13). P. 2043–2050. https://doi.org/10.1016/j.cub.2017.06.006

Hibbett D.S., Binder M., Bischoff J. et al. A higher level phylogenetic classification of the fungi. Mycological Research. 2007. V. 111. P. 509–547. https://doi.org/10.1016/j.mycres.2007.03.004

James T.Y., Letcher P.M., Longcore J.E. et al. A molecular phylogeny of the flagellated fungi (Chytridiomycota) and description of a new phylum (Blastocladiomycota). Mycologia. 2006. V. 90 (6). P. 860–871.

Kent W. S. A manual of the Infusoria. L., Bogue, 1880–1882. 230 pl.

Liu Y., Steenkamp E. T., Brinkmann H., et al. Phylogenomic analyses predict sistergroup relationship of nucleariids and fungi and paraphyly of zygomycetes with significant support. BMC Evolutionary Biology. 2009;9:1–11. https://doi.org/10.1186/1471-2148-9-272

Ruggiero M.A., Gordon D.P., Orrell T.M. et al. A higher level classification of all living organisms. PLOS one. 2016. P. 1-50. http://dx.doi.org/10.1371/journal.pone.0119248

Schüβler A., Schwarzott D., Walker C. A new fungal phylum, the Glomeromycota: phylogeny and evolution. Mycol. Research. 2001. V. 105 (12). P. 1413–1421. https://doi.org/10.1017/S0953756201005196

Shalchian-Tabrizi K., Minge M.A., Espelund M., et al. Multigene phylogeny of choanozoa and the origin of animals. PLOS ONE. 3 (5): e2098. https://doi.org/10.1371/journal.pone.0002098

Spatafora J.W., Chang Y., Benny G.L. et al. A phylum-level phylogenetic classification of zygomycete fungi based on genome-scale data. Mycologia. 2016. V. 108. P. 1028–1046. https://doi.org/10.3852/16-042

Tikhonenkov D. V., Hehenberger E., Esaulov A.S., Belyakova O.I., Mazei Yu. I,
Mylnikov A.P., Keeling P.J. Insights into the origin of metazoan multicellularity from predatory unicellular relatives of animals. BMC Biology. 2020. 18: 39. https://doi.org/10.1186/s12915-020-0762-1

Torruella G., Grau-Bové X., Moreira D. et al. The transcriptome of Paraphelidium tribonemae illuminates the ancestry of Fungi and Opisthosporidia. Social Science Research Network. 2018. https://ssrn.com/abstract=3155652; http://dx.doi.org/10.2139/ssrn.3155652

Whittaker R.H. On the broad classification of organisms. Quarterly Review of Biology. 1959. 34: 210–226.

• Amorphea [Adl et al., 2012]
[unranked clade Obazoa, Brown et al., 2013]
•• Opisthokonta [Cavalier-Smith, 1987]
••• Holomycota [Liu et al., 2009]
•••• Cristidiscoidea [Cavalier-Smith, 1998]
••••• Fonticulida [Cavalier-Smith, 1993]
••••• Nucleariida [Cavalier-Smith, 1993]
•••• Zoosporia [Torruella et al., 2018]
••••• Opisthosporidia [Torruella et al., 2018]
••••• Fungi [Whittaker, 1959] = Eumycota
••••••• Chytridiomycotina [Hibbett et al., 2007] ined.
•••••••• Chytridiomycotera ined.
•••••••• Monoblepharomycotera ined.
•••••••• Neocallimastigomycotera ined.
••••••• Olpidiomycotina [Doweld, 2013] ined.
••••••• Sanchytriomycotina [Galindo et al., 2021] ined.
••••••• Blastocladiomycotina [James et al., 2006] ined.
••••••• Basidiobolomycotina [Doweld, 2001] ined.
••••••• Zoopagomycotina [Spatafora et al., 2016] ined.
•••••••• Enthomophthoromycotera ined.
•••••••• Kickxellomycotera ined.
•••••••• Zoopagomycotera ined.
••••••• Glomeromycotina [Schüβler et al., 2001] ined.
••••••• Mucoromycotina [Doweld, 2001]
•••••••• Mucoromycotera ined.
•••••••• Mortierellomycotera ined.
•••••••• Calcarisporiellomycotera ined.
••••••• Dikarya [Hibbett et al., 2007] ined.
•••••••• Entorrhizomycetera ined.
•••••••• Basidiomycotera ined.
•••••••• Ascomycotera ined.
••• Holozoa [Aleshin et al., 2007]
•••• Ichtyosporea [Cavalier-Smith, 1998]
•••• Pluriformea [Hehenberger et al., 2017]
••••• Corallochytrea [Cavalier-Smith, 1998]
••••• Syssomonadea [Tikhonenkov et al., 2020]
••••• Filozoa [Shalchian-Tabrizi et al., 2008]
•••••• Filasterea [Shalchian-Tabrizi et al., 2008]
•••••• Choanozoa [Cavalier-Smith, 1998; Brunet, King, 2017]
••••••• Choanoflagellata [Kent, 1882]
••••••• Metazoa [Haeckel, 1874]
•••••••• Porifera [Grant, 1836]
•••••••• Eumetazoa [Bütschli, 1910]
•• Breviatea [Cavalier-Smith, 2013]
•• Apusomonadida [Cavalier-Smith, 2013]

Rank correlation:
• ~Subdomain;
•• ~ Kingdom;
••• ~ Infrakingdom;
•••• ~ Superphylum;
••••• ~ Phylum;
••••••• ~ Parvphylum;
•••••••• ~Superclass