Parvphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
   Class Gregarinomorphea Grassé, 1953
     Subclass Histogregaria Cavalier-Smith, 2014 [monotypic]
       Order Histogregarida Cavalier-Smith, 2014
         1 Family Rhytidocystidae Levine, 1979 [monotypic]
         2 Family Gemmocystidae Upton & Peters, 1986 [monotypic]