Belemnotheutis

Belemnotheutis is an extinct genus of belemnite, a group of marine cephalopods related to modern squids and cuttlefish. These creatures lived during the Late Jurassic to Early Cretaceous periods, about 150 to 100 million years ago. They had a bullet-shaped shell that helped them swim in the ocean. Fossils of Belemnotheutis provide valuable insights into ancient marine ecosystems and the evolutionary history of cephalopods. Their unique morphology and adaptations make them an interesting subject for paleontologists studying the past biodiversity of our planet's oceans.