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Organism
  Animalia
         [Metazoa]
      Arthropoda
        Crustacea
          Multicrustacea
            Malacostraca
              Eumalacostraca
                  Eucarida
                    Decapoda
                      Pleocyemata
                        Brachyura
                               [Archaeobrachyura]
                               [Brachyrhyncha]
                               [Cancridea]
                               [Dromiacea]
                               [Oxyrhyncha]
                               [Oxystomata]
                          Pseudothelphusoidea
                            Pseudothelphusidae
                                     Elsalvadoria
                                     Epilobocera
                                             Epilobocera armata
                                             Epilobocera haytensis
                                             Epilobocera sinuatifrons
                                     Fredius
                                             Fredius chaffanjoni
                                             Fredius reflexifrons
                                     Guinotia
                                             Guinotia dentata
                                     Hypolobocera
                                             Hypolobocera aequatorialis
                                             Hypolobocera bouvieri
                                             Hypolobocera canaensis
                                             Hypolobocera chilensis
                                                   [Pseudothelphusa dentata]
                                             Hypolobocera meineli
                                             Hypolobocera smalleyi
                              Hypolobocerinae
                                     Kingsleya
                                             Kingsleya latifrons
                                     Moritschus
                                             Moritschus henrici
                                     Neostrengeria
                                             Neostrengeria lindigiana
                                                   [Pseudothelphusa lindigiana]
                                             Neostrengeria macropa
                                             Neostrengeria tonensis
                                     Phrygiopilus
                                     Potamocarcinus
                                             Potamocarcinus lobulatus
                                             Potamocarcinus magnus
                                                   [Potamocarcinus guatemalensis]
                                                   [Pseudothelphusa magnus]
                                             Potamocarcinus moritschi
                                             Potamocarcinus nicaraguensis
                                             Potamocarcinus richmondi
                                     Pseudothelphusa
                                             Pseudothelphusa americana
                                             Pseudothelphusa belliana
                                                   [Pseudothelphusa digueti]
                                             Pseudothelphusa dilatata
                                             Pseudothelphusa dugesi
                                             Pseudothelphusa jouyi
                                             Pseudothelphusa morelosis
                                             Pseudothelphusa plana
                                             Pseudothelphusa richmondi
                                             Pseudothelphusa sonorae
                                                   [Pseudothelphusa sonorensis]
                              Pseudothelphusinae
                                     Microthelphusa
                              Ptychophallinae
                                     Allacanthos
                                             Allacanthos pittieri
                                     Ptychophallus
                                             Ptychophallus cocleensis
                                             Ptychophallus colombianus
                                             Ptychophallus exilipes
                                             Ptychophallus kuna
                                             Ptychophallus micracanthus
                                             Ptychophallus montanus
                                             Ptychophallus paraxantusi
                                             Ptychophallus tumimanus
                                                   [Pseudothelphusa tumimanus]
                                             Ptychophallus uncinatus
                                     Raddaus
                                             Raddaus bocourti
                                             Raddaus orestrius
                                     Rodriguezus
                                             Rodriguezus garmani
                                     Spirocarcinus
                                             Spirocarcinus garthi
                              Strengerianinae
                                     Chaceus
                                             Chaceus motiloni
                                             Chaceus pearsei
                                     Typhlopseudothelphusa
                                             Typhlopseudothelphusa acanthochela