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
       Phylum Euglenozoa Cavalier-Smith, 1981
         Class Euglenoidea Bütschli, 1884
           Order Euglenida Bütschli, 1884 - euglenids
             Suborder Eutreptiina Leedale, 1967
               1 Genus Distigma Ehrenberg, 1831
               2 Genus Distigmopsis Hollande, 1942
               3 Genus Eutreptia Perty, 1852
               4 Genus Eutreptiella da Cunha, 1913