living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryotae see Domain Eukaryota Chatton, 1925
     Animalia Linnaeus, 1758 - animals
       Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Ciliophora Doflein, 1901 - ciliates
           Polyhymenophora Jankowski, 1967 see Class Spirotrichea Bütschli, 1889
             Spirotricha see Class Spirotrichea Bütschli, 1889
               Heterotrichida Stein, 1859 - heterotrichs
                 Heterotrichina see Order Heterotrichida Stein, 1859
                   Condylostomatidae Kahl, in Doflein & Reichenow, 1929
                     Condylostoma Bory de St. Vincent, 1826