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 Vestibulifera see Subclass Vestibuliferia de Puytorac et al., 1974
               Order Trichostomatida Bütschli, 1889 see Subclass Trichostomatia Bütschli, 1889
                 Suborder Trichostomatina Bütschli, 1889 see Subclass Trichostomatia Bütschli, 1889
                   01 Family Balantidiidae Reichenow, in Doflein & Reichenow, 1929
                   02 Family Coelosomididae
                   03 Family Isotrichidae Bütschli, 1889
                   04 Family Marynidae Poche, 1913
                   05 Family Paraisotrichidae da Cunha, 1917
                   06 Family Plagiopylidae Schewiakoff, 1896
                   07 Family Protocaviellidae Grain, in Corliss, 1979
                   08 Family Pycnotrichidae Poche, 1913
                   09 Family Trichospiridae Kahl, 1926
                   10 Family Trimyemidae Kahl, 1926