Eukaryota Chatton, 1925 - eukaryotes
 see Domain Eukaryota Chatton, 1925
  
 Amorphea Adl et al. 2012, nom. cl. inval.
 see Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
    
 Supergroup Opisthokonta Cavalier-Smith, 1987 - opisthokonts
 see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
      
 Nucletmycea Brown, Spiegel & Silberman 2009 []
 see Superkingdom Holomycota Liu, Steenkamp, Brinkmann, Forget, Philippe & Lang, 2009
        
 Fungi L. (1753)
 see Kingdom Fungi R.T.Moore (1980)
          
 Chytridiomycota Doweld (2001)
            
 Chytridiomycetes Moebius (1929)
              
 Polychytriales Longcore & D.R. Simmons (2012)
                
 1 Genus Arkaya Longcore & D.R. Simmons (2012)
                
 2 Genus Karlingiomyces Sparrow (1960)
                
 3 Genus Lacustromyces Longcore (1993)
                
 4 Genus Neokarlingia Longcore & D.R. Simmons (2012)
                
 5 Genus Polychytrium Ajello (1942)