koni biçiminde olan bir çeşit fosil

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التركية - الإنجليزية
belemnite
An extinct group of Mesozoic marine cephalopod, very similar in many ways to the modern squid and closely related to the modern cuttlefish
The belemnites are found in rocks of the Jurassic and Cretaceous ages
It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family
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
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
koni biçiminde olan bir çeşit fosil
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