Castelloceras

Castelloceras is an extinct genus of actively mobile carnivorous cephalopod of the family "Baltoceratidae" that lived in what would be Europe during the Ordovician from 468—443.7 mya, existing for approximately .
Taxonomy.
"Castelloceras" was named by Evans (2005). Its type is "Castelloceras arennigense". It was assigned to "Baltoceratidae" by Evans (2005).