[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Supergroup Excavata Cavalier-Smith, 2002 see [unranked] Excavata Cavalier-Smith, 2002
       Fornicata Simpson, 2003 see Infraphylum Fornicata Simpson, 2003
         Eopharyngia Cavalier-Smith, 1993 see Superclass Eopharyngia (Cavalier-Smith, 1993) Cavalier-Smith, 2003
           Diplomonadida Wenyon, 1926 see Order Diplomonadida Wenyon, 1926
             Giardiinae Kulda & Nohýnková, 1978 see Family Giardiidae Kulda & Nohýnková, 1978
               1 Genus Giardia Künstler, 1882
               2 Genus Octomitus Prowazek, 1904