organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Acoelomata see [unranked] Acoelomates Hyman, 1951
           Phylum Mesozoa van Beneden, 1876 see [unranked] Mesozoa van Beneden, 1876
             Genus Conocyema van Beneden, 1882
             Genus Dicyema Kölliker, 1849
             Genus Dicyemennea Whitman, 1883?
             Genus Microcyema Van Beneden, 1882
             Genus Pseudicyema Nouvel, 1933
             Genus Rhopalura Giard, 1877
             Genus Stoecharthrum Caullery & Mesnil, 1899
             1 Class "Dicyemids" see Order Dicyemida van Beneden, 1876
             2 Class "Orthonectids" see Class Orthonectida Giard, 1880