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Noun1.Belemnitidae - family of extinct Mesozoic cephalopods
mollusk family - a family of mollusks
Belemnoidea, order Belemnoidea - order of extinct dibranchiate cephalopods related to the surviving spirulas
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
References in periodicals archive ?
* Phyllum: Mollusca; Clase: Cephalopoda; Orden: Belemnitida; Familia: Belemnitidae; Genero: Belemnites.