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 Odontostomatida Sawaya, 1940 - odontostomatids
                 1 Family Expalxellidae nom. null. see Family Epalxellidae Corliss, 1960
                 2 Family Discomorphellidae Corliss, 1960
                 3 Family Mylestomatidae Kahl, in Doflein & Reichenow, 1929