Parvphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
   Class Coccidiomorphea Doflein, 1901
     Subclass Hematozoa Vivier, 1982
       Superorder Aconoidia Cavalier-Smith, 2014
         Order Nephromycida Cavalier-Smith, 1993
           1 Genus Nephromyces Giard, 1888
           2 Genus Cardiosporidium Gaver & Stephan, 1907