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 Kinetofragminophora see Class Kinetofragminophorea
             Subclass Suctoria Claparède & Lachmann, 1858 - suctorians
               Order Suctorida see Subclass Suctoria Claparède & Lachmann, 1858
                 Suborder Exogenina Collin, 1912 see Order Exogenida Collin, 1912
                   01 Family Podophryidae Haeckel, 1866
                   02 Family Paradodophryidae see Family Parapodophryidae Jankowski, 1973
                   02 Family Parapodophryidae Jankowski, 1973
                   03 Family Urnulidae Fraipont, 1878
                   04 Family Ephelotidae Kent, 1882
                   05 Family Spelaeophryidae Jankowski, in Batisse, 1975
                   06 Family Rhabdophryidae Jankowski, 1970
                   07 Family Stylostomatidae Batisse, 1975
                   08 Family Ophryodendridae Stein, 1867
                   09 Family Tachyblastonidae Grell, 1950
                   10 Family Thecacinetidae D. Matthes, 1956
                   11 Family Phalacrocleptidae Kozloff, 1966