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] Order Rictida Cavalier-Smith, 2013 [monotypic] Family Rictidae Cavalier-Smith, 2013 [monotypic] Genus Rictusᵀ Yubuki et al., 2010