Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818
   Class Sporozoa Leuckart, 1879 see Class Sporozoea
     1 Subclass Gregarinida see Subclass Gregarinasina Dufour, 1828
     2 Subclass Coccidia Leuckart, 1879
     3 Subclass Myxosporidia see Phylum Myxozoa Grassé, 1970, incertae sedis
     4 Subclass Sarcosporidia