Parvphylum Sporozoa Leuckart, 1879 see Superclass Sporozoa Leuckart, 1879
   Class Paragregarea Cavalier-Smith, 2014
     Order Velocida Cavalier-Smith, 2014
       Superfamily Urosporoidea Léger, 1892
         Family Lecudinidae Kamm, 1922
           1 Genus Lecudina Mingazzini, 1891
           2 Genus Lankesteria Mingazzini, 1891
           3 Genus Difficilina Simdianov, 2009