organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     flagellated protists
       Order Diplomonadida Wenyon, 1926 - diplomonads
         Suborder Diplomonadina see Order Diplomonadida Wenyon, 1926
           Family Hexamitidae Kent, 1881
             1 Subfamily Hexamitinaeᵀ Kent, 1880 see Family Hexamitidae Kent, 1881
             2 Subfamily Giardiinae Kulda & Nohýnková, 1978 see Family Giardiidae Kulda & Nohýnková, 1978