Kingdom Protozoa Goldfuss, 1818 - protozoa
   ?Phylum Apusozoa Cavalier-Smith, 1997 see Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
     Class Diphyllatea Cavalier-Smith, 2003
       Order Diphylleida Cavalier-Smith, 1993
         Family Diphylleidae Cavalier-Smith, 1993
           1 Genus Diphylleia Massart, 1920
           2 Genus Collodictyon Carter, 1865