Superregnum: Eukaryota
Regnum: Animalia
Phylum: Mollusca
Classis: Cephalopoda
Subclassis: Nautiloidea
Ordo: †Oncocerida
Familiae: Acleistoceratidae - Archiacoceratidae - Brevicoceratidae - Diestoceratidae - Graciloceratidae - Hemiphragmoceratidae - Jovellaniidae - Karoceratidae - Nothoceratidae - Oncoceratidae - Polyelasmoceratidae - Poterioceratidae - Tripleuroceratidae - Tripteroceratidae - Valcourocratidae
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