Protozoa Goldfuss, 1818 - protozoans Phylum Apicomplexa Levine, 1970 see Infraphylum Apicomplexa Levine, 1970 Class Sporozoea 1 Subclass Gregarinia see Subclass Gregarinasina Dufour, 1828 2 Subclass Coccidia Leuckart, 1879 3 Subclass Piroplasmia see Order Piroplasmida Wenyon, 1926