Bigyra Cavalier-Smith, 1998 Subphylum Opalozoa Cavalier-Smith, 1992 Infraphylum Bikosia Cavalier-Smith, 2013 [monotypic] Class Bikosea Cavalier-Smith, 2013 Subclass Rictidia Cavalier-Smith, 2013 [monotypic] 1 Order Rictida Cavalier-Smith, 2013 [monotypic]