{{Short description|Extinct genus of molluscs}} {{Automatic taxobox | taxon = Castelloceras | fossil_range = {{Fossil range|Middle Ordovician|Early Devonian}} | image = | image_caption = | authority= Eichwald (1860) }}

'''''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 {{Mya|468-443.7|million years}}.<ref>[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=142795 PaleoBiology Database: ''Castelloceras'', basic info]</ref>

==Taxonomy== ''Castelloceras'' was named by Evans (2005). Its type is ''Castelloceras arennigense''. It was assigned to ''Baltoceratidae'' by Evans (2005).<ref>D. H. Evans. 2005. The Lower and Middle Ordovician cephalopod faunas of England and Wales. Monograph of the Palaeontographical Society 623:1-81</ref>

==Sources== {{Reflist}} * ''Fossils'' (Smithsonian Handbooks) by David Ward

{{Portal|Paleontology}} {{Taxonbar|from=Q5049698}}

Category:Monotypic prehistoric cephalopod genera Category:Ordovician cephalopods Category:Darriwilian first appearances Category:Early Devonian genus extinctions Category:Prehistoric animals of Europe Category:Orthocerida