Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: † Ammonoidea
Ordo: Goniatitida
Subordo: Tornoceratatina
Superfamilia: Prionocerataceae
Familia: Prionoceratidae
Subfamilia: Acutimitoceratinae
Genera: Acutimitoceras – Costimitoceras – Nicimitoceras – Sulcimitoceras
Name
Prionocerataceae Korn, 1994
Acutimitoceratinae is one of six subfamilies of the Prionoceratidae family, a member of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.
References
The Paleobiology Database accessed on 10/01/07
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