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 Astomatida Schewiakoff, 1896
                 01 Family Archiastomatidae
                 02 Family Anoplophryidae Cépède, 1910
                 03 Family Buetschliellidae de Puytorac, in Corliss, 1979
                 04 Family Hoplitophryidae Cheissin, 1930
                 05 Family Radiophryidae de Puytorac, 1972
                 06 Family Contophryidae de Puytorac, 1972
                 07 Family Maupasellidae Cépède, 1910
                 08 Family Intoshellinidae Cépède, 1910
                 09 Family Haptophryidae Cépède, 1910
                 10 Family Clausilocolidae de Puytorac, in Corliss, 1979
                 11 Genus Archiastomata Foissner, 1976