Phylum Bigyra Cavalier-Smith, 1998
   Subphylum Sagenista Cavalier-Smith, 1995
     Class Labyrinthulea Olive ex Cavalier-Smith, 1986
       Order Labyrinthulida Lankester, 1877 - labyrinthulids
         Family Aplanochytriidae Leander ex Cavalier-Smith, 2012 [monotypic]
           1 Genus Aplanochytriumᵀ Bahnweg & Sparrow, 1972