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 Oligohymenophora see Class Oligohymenophorea de Puytorac et al., 1974
             Subclass Hymenostomata see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
               Order Scuticociliatida Small, 1967 see Subclass Scuticociliatia (E.B. Small, 1967)
                 Suborder Pleuronematina Fauré-Fremiet, 1956 see Order Pleuronematida Fauré-Fremiet, 1956
                   1 Family Pleuronematidae Kent, 1881
                   2 Family Cyclidiidae Ehrenberg, 1838
                   3 Family Histiobalantidiidae see Family Histiobalantiidae de Puytorac & Corliss, in Corliss, 1979
                   4 Family Peniculistomatidae Fenchel, 1965
                   5 Family Thigmocomidae Kazubski, 1958
                   6 Family Conchophthiridae Kahl, in Doflein & Reichenow, 1929