#genus_Limulus__Limulus  type genus of the family Limulidae
  supertype:  #arthropod_genus  a genus of arthropods
  member:  #horseshoe_crab
  member of:  #family_Limulidae__Limulidae  horseshoe crabs
     member of:  #order_Xiphosura__Xiphosura  horseshoe crabs and extinct forms
        member of:  #class_Merostomata__Merostomata  used in some classifications; includes the orders Xiphosura and Eurypterida
           member of:  #superclass_Chelicerata__Chelicerata  spiders; scorpions; horseshoe crabs
              member of:  #phylum_Arthropoda__Arthropoda  jointed-foot invertebrates: arachnids; crustaceans; insects; millipedes; centipedes
                 member of:  #kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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