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 Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
             Subclass Malacostraca Latreille, 1802 see Class Malacostraca Latreille, 1802
               Superorder Peracarida Calman, 1904
                 Order Tanaidacea Dana, 1849 - tanaids
                   Suborder Monokonophora Lang, 1956 see Suborder Apseudomorpha Sieg, 1980
                     1 Family Apseudellidae Gutu, 1972
                     2 Family Apseudidae Leach, 1814
                     3 Family Cirratodactylidae Gardiner, 1973a see Family Kalliapseudidae Lang, 1956
                     4 Family Metapseudidae Lang, 1970
                     5 Family Tanzanapseudidae Bacescu, 1975
                     6 Family Kalliapseudidae Lang, 1956
                     7 Family Leiopidae Lang, 1970 see Family Apseudidae Leach, 1814
                     8 Family Pagurapseudidae Lang, 1970