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 Eucarida Calman, 1904
                 Order Decapoda Latreille, 1802 - decapods
                   Suborder Pleocyemata Burkenroad, 1963
                     Infraorder Brachyura Latreille, 1802 - true crabs
                       Section Brachyrhyncha Borradaile, 1907 see Section Eubrachyura de Saint Laurent, 1980
                         Superfamily Portunoidea Rafinesque, 1815
                           Family Geryonidae Colosi, 1923
                             1 Genus Geryon Krøyer, 1837
                             2 Genus Progeryon Bouvier, 1922
                             3 Genus Platypilumnus Alcock, 1894
                             4 Genus Paragalene Kossmann, 1878
                             5 ?Genus Bathyplax Milne-Edwards, 1880
                             6 ?Genus Platychelion