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 Copepoda H. Milne-Edwards, 1840 - copepods
               Order Monstrilloida Sars, 1901
                 Section Cyclopimorpha see Family Thaumatopsyllidae G.O. Sars, 1913
                   Family Thespesiopsyllidae see Family Thaumatopsyllidae G.O. Sars, 1913
                     1 Genus Thespesiopsyllus C.B. Wilson, 1924 see Genus Thaumatopsyllus G.O. Sars, 1913
                     2 Genus Orientopsyllus Sewell, 1949