[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
       Preaxostyla Simpson, 2003 see Phylum Preaxostyla Simpson, 2003
         Oxymonadida Grassé, 1952 see Order Oxymonadida Grassé, 1952
           1 Genus Dinenympha Leidy, 1877
           2 Genus Monocercomonoides Travis, 1932
           3 Genus Oxymonas Janicki, 1915
           4 Genus Polymastix Bütschli, 1884
           5 Genus Pyrsonympha Leidy, 1877
           6 Genus Saccinobaculus Cleveland, 1934
           7 Genus Streblomastix Kofoid & Swezy, 1920