Belemnite
The Belemnites (or bélemnites) are Céphalopode S having lived with the Jurassic and the Crétacé. Their fossils have a characteristic form in " ball of fusil".
The name of these fossils comes from the meaning Greek belemnon : similar to a javelin. Their true nature was identified only in 1765, by Jean-Louis Alléon-Dulac, in its Mémoire to be used with the natural history of the provinces as Lyonese, Forez and Beaujolais wine . The belemnites are related dibranchiaux cephalopods with the current cuttlefish.
Their Squelette intern comprises two parts: the full rostre, in bullet, and the Phragmocône, partitioned, where the animal lived. The phragmocône was prolonged by a blade cornea, the Proostracum, seldom preserved.
The belemnites had an ink pocket, like the cuttlefish. Their arms did not carry suction cups, but of small hooks to capture their preys.
Some were gigantic: Megatheutis could perhaps reach 3 Mr.
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