Kingdom Chromalveolata Adl et al., 2005 see Kingdom Chromista Caval.-Sm. (1981)
   Infrakingdom Alveolata Cavalier-Smith, 1991 see [unranked] Alveolata Cavalier-Smith, 1991
     Phylum Myzozoa Cavalier-Smith & Chao, 2004 see Subphylum Myzozoa Cavalier-Smith & Chao, 2004
       Class Oxyrrhea Cavalier-Smith, 1987 [monotypic]
         Order Oxyrrhida Sournia, 1990
           1 Family Oxyrrhinaceae Sournia (1984) [monotypic]