Phylum Cercozoa Cavalier-Smith, 1998
   Subphylum Endomyxa T. Cavalier-Smith, 2002
     Class Ascetosporea T. Cavalier-Smith, 2002
       1 Order Haplosporidia see Phylum Haplosporidia Caullery & Mesnil, 1899
       2 Order Paramyxida Chatton, 1911
       3 Order Claustrosporida T. Cavalier-Smith & E.E.-Y. Chao, 2003