belemnite

• Nom masculin désignant un mollusque céphalopode fossile de la famille des Bélemnitidés, caractérisé par une coquille interne conique et calcaire en forme de pointe, dont on trouve souvent les restes dans les roches sédimentaires.

A noun referring to an extinct cephalopod mollusk from the family Belemnitidae, known for its conical, calcareous fossilized internal shell that tapers to a point and contains a small chambered phragmocone.

1. Extinct cephalopod fossilC2formalscientific

   A conical, calcareous fossil that tapers to a point at one end and has a conical cavity at the other end, which often contains a small, chambered phragmocone. It is the remains of an extinct marine cephalopod from the family Belemnitidae.

   Bélemnite (fossile de céphalopode éteint)

   • The cliff face was rich in belemnite fossils from the Jurassic period.
   • Paleontologists carefully extracted a perfectly preserved belemnite from the shale.
   • The belemnite's bullet-shaped guard is often the only part that fossilizes.
   • Students studied the chambered phragmocone inside the belemnite fossil.