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)
          
 Neocallimastigaceae I.B. Heath (1983)
            
 Genus Piromyces J.J. Gold, I.B. Heath & Bauchop (1988)