#order_Belemnoidea__Belemnoidea order of extinct dibranchiate cephalopods related to the surviving spirulas
supertype: #animal_order the order of animals
member of: #subclass_Dibranchiata
member: #family_Belemnitidae__Belemnitidae family of extinct Mesozoic cephalopods
member: #belemnite a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae
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