Kingdom Protoctista Hogg, 1860
   Phylum Myxozoa Grassé, 1970, incertae sedis - myxozoans see Subphylum Myxozoa Grassé, 1970
     1 Class Myxosporea Bütschli, 1881
     2 Class Actinosporea Noble, 1980 [monotypic] see Class Myxosporea Bütschli, 1881