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 Entodiniomorphida Reichenow, in Doflein & Reichenow, 1929
                 Family Ophryoscolecidae Stein, 1859
                   1 Genus Diplodinium Schuberg, 1888
                   2 Genus Entodinium Stein, 1859
                   3 Genus Epidinium Crawley, 1923
                   4 Genus Eremoplastron Kofoid & MacLennan, 1932
                   5 Genus Eudiplodinium Dogiel, 1927
                   6 Genus Ophryoscolex Stein, 1859
                   7 Genus Ostracodinium Dogiel, 1927
                   8 Genus Polyplastron Dogiel, 1927