#order_Decapoda__Decapoda  squids and cuttlefishes
  supertype:  animal_order  the order of animals
  member of:  subclass_Dibranchiata
  member:  decapod  cephalopods having eight short tentacles plus two long ones
  member:  genus_Loligo  squids
     member:  loligo  somewhat flattened cylindrical squid
  member:  genus_Ommastrephes  a genus of Decapoda
     member:  ommastrephes  extremely active cylindrical squid with short strong arms and large rhombic terminal fins
  member:  genus_Architeuthis  giant squid
     member:  architeuthis__giant_squid__giantsquid  largest mollusk known about but never seen (to 60 feet long)
  member:  family_Sepiidae__Sepiidae  true cuttlefishes
     member:  genus_Sepia__Sepia  type genus of the Sepiidae
        member:  cuttlefish__cuttle  ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell
  member:  family_Spirulidae__Spirulidae  coextensive with the genus Spirula; included in the order Belemnoidea in some older classifications
     member:  genus_Spirula  genus of small cephalopods with many-chambered spiral shells resembling those of the extinct belemnites
        member:  spirula__Spirula_peronii  a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral

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