Bigyra Cavalier-Smith, 1998 Subphylum Opalozoa Cavalier-Smith, 1992 Infraphylum Bikosia Cavalier-Smith, 2013 [monotypic] Class Bikosea Cavalier-Smith, 2013 Subclass Bicosidia Cavalier-Smith, 2006 Superorder Cyathobodoniae Cavalier-Smith, 1993 Order Anoecida Cavalier-Smith, 1997 1 Family Cafeteriidae Moestrup, 1995 2 Family Caecitellidae Cavalier-Smith, 2006