Kingdom Protoctista Hogg, 1860
   Phylum Myxozoa Grassé, 1970, incertae sedis - myxozoans see Subphylum Myxozoa Grassé, 1970
     Class Actinosporea Noble, 1980 [monotypic] see Class Myxosporea Bütschli, 1881
       Order Actinomyxida Štolc, 1899
         1 Family Tetractinomyxidae Poche, 1913, nom. inq. [monotypic]
         2 Family Sphaeractinomyxidae Janiszewska, 1957
         3 Family Triactinomyxidae R.R. Kudo, 1931
         4 Family Synactinomyxidae F. Poche, 1913
         5 Family Hexactinomyxidae Sprague, 1982 [monotypic]
         6 Family Ormieractinomyxidae Marques, 1984 [monotypic]