#malacostracan_crustacean__malacostracancrustacean  a major subclass of crustaceans
  supertype:  crustacean  any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
  subtype:  krill  opossum_shrimp  isopod  amphipod
  member of:  subclass_Malacostraca__Malacostraca  largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies
     member of:  class_Crustacea__Crustacea  class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas
        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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