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 Corophioidea Leach, 1814 see Infraorder Corophiida Leach, 1814 () sensu Lowry & Myers, 2013
                       Family Ischyroceridae Stebbing, 1899
                         1 Genus Isaeopsis Barnard, 1916
                         2 Genus Ericthonius Milne-Edwards, 1830
                         3 Genus Cerapus Say, 1817
                         4 Genus Cerapopsis Della Valle, 1893
                         5 Genus Pseudericthonius Schellenberg, 1926
                         6 Genus Runanga J.L. Barnard, 1961
                         7 Genus Ventojassa J.L. Barnard, 1970