Agastrioceras

Agastrioceras is a genus of cephalopod belonging to the Gastrioceratidae family. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.

Agastrioceras

Agastrioceras is a genus of cephalopod belonging to the Gastrioceratidae family. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.