Parvphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
   Class Gregarinomorphea Grassé, 1953
     Subclass Orthogregarinia Cavalier-Smith, 2014
       Order Arthrogregarida Cavalier-Smith, 2014
         1 Suborder Porosporina Cavalier-Smith, 2014 [monotypic]
         2 Suborder Terragregarina Cavalier-Smith, 2014