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 Amphipoda Latreille, 1816 - amphipods
                   Suborder Gammaridea Latreille, 1802
                     Superfamily Melphidippoidea Stebbing, 1899
                       1 Family Melphidippidae Stebbing, 1899
                       2 Family Megaluropidae E.L. Bousfield, 1982, nom. inval. see Family Megaluropidae Thomas & Barnard, 1986
                       3 [unranked] Hornellia-Cheirocratus group see Family Cheirocratidae Ren, 2006
                       4 ?Family Phreatogammaridae Bousfield, 1982