Phylum Amoebozoa Lühe, 1913
   Subphylum Conosa Cavalier-Smith, 1998 see Infraphylum Conosa Cavalier-Smith, 1998
     Class Variosea Cavalier-Smith, 2004
       Order Holomastigida Lauterborn, 1895 [monotypic]
         Family Multiciliidae Poche, 1913 [monotypic]
           Genus Multicilia Cienkowski, 1881