Cercozoa Cavalier-Smith, 1998
Count: 3c;6o;20g;6s
   Filosa T. Cavalier-Smith & E.E.-Y. Chao, 2003
  Count: 3c;6o;20g;6s
     Genus Micrometopion A.T. Howe et al., 2011
    Count: [*] 1s
       1 Micrometopion nutans A.T. Howe et al., 2011
      Count: -