living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Phylum Ciliophora Doflein, 1901 - ciliates
           Class Polyhymenophora Jankowski, 1967 see Class Spirotrichea Bütschli, 1889
             Subclass Spirotricha see Class Spirotrichea Bütschli, 1889
               Order Oligotrichida Bütschli, 1889 see Subclass Oligotrichia Bütschli, 1889
                 Suborder Oligotrichina see Subclass Oligotrichia Bütschli, 1889
                   ?Family Strombilidiidae see Family Strobilidiidae Kahl, 1929
                     1 Genus Strobilidium Schewiakoff, 1892
                     2 Genus Strombidinopsis Kent, 1881