life
 see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
  
 Empire Eukaryota (Chatton, 1925)
 see Domain Eukaryota Chatton, 1925
    
 Superkingdom Archezoa Cavalier-Smith, 1983 [monotypic]
 see Infrakingdom Archezoa Cavalier-Smith, 1983
      
 Kingdom Archezoa Cavalier-Smith, 1983
 see Infrakingdom Archezoa Cavalier-Smith, 1983
        
 Phylum Metamonada Grassé, 1952
          
 Subphylum Axostylaria Grassé, 1952 [monotypic]
 see Class Anaeromonadea Cavalier-Smith, 1997
            
 Class Oxymonadea Grassé, 1952 [monotypic]
 see Order Oxymonadida Grassé, 1952
              
 Order Oxymonadida Grassé, 1952 - oxymonads