eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Sarcomastigota Cavalier-Smith, 1983 [paraphyletic] see [unranked] dorsates Cavalier-Smith, 2021
       Phylum Sulcozoa Cavalier-Smith, 2012 [paraphyletic] see [unranked] dorsates Cavalier-Smith, 2021
         Subphylum Apusozoa Cavalier-Smith, 1997 see Phylum Apusozoa Cavalier-Smith, 1997
           Class Thecomonadea Cavalier-Smith, 1993 [monotypic]
             Order Apusomonadida Karpov & Mylnikov, 1989 [monotypic]
               Family Apusomonadidae Karpov & Mylnikov, 1989
                 1 Genus Amastigomonas De Saedeleer, 1931
                 2 Genus Apusomonas Aléxéieff, 1924
                 3 Genus Manchomonas Cavalier-Smith & Chao, 2010
                 4 Genus Multimonas Cavalier-Smith, 2010
                 5 Genus Podomonas Cavalier-Smith & Chao, 2010
                 6 Genus Thecamonas Larsen & Patterson, 1990