Division Opisthokonta Cavalier-Smith, 1987 see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
   Superkingdom Holomycota Liu, Steenkamp, Brinkmann, Forget, Philippe & Lang, 2009
     Kingdom Fungi R.T.Moore (1980) - fungi
       Subkingdom Chytridiomyceta Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, M. Döring, Schigel, T.W. May, M. Ryberg & Abarenkov (2018)
         1 Phylum Neocallimastigomycota M.J. Powell (2007) [monotypic]
         2.1 Phylum Monoblepharomycota Doweld (2001)
         2.2 Phylum Chytridiomycota Doweld (2001)