Belemnite - Definition - Law Dictionary Home Dictionary Definition belemnite

Definition :

A conical calcareous fossil tapering to a point at the lower extremity with a conical cavity at the other end where it is ordinarily broken but when perfect it contains a small chambered cone called the phragmocone prolonged on one side into a delicate concave blade the thunderstone It is the internal shell of a cephalopod related to the sepia and belonging to an extinct family The belemnites are found in rocks of the Jurassic and Cretaceous ages