Opinions from R. C. Thomson and P. L. Smith 1992
- 'Acanthopleuroceras belongs to Acanthopleuroceratinae'
- 'Acanthopleuroceratinae belongs to Polymorphitidae'
- 'Ammonites algovianus is recombined as Arieticeras algovianum'
- 'Ammonites flandrini is recombined as Tropidoceras flandrini'
- 'Ammonites ruthenense is recombined as Arieticeras ruthenense'
- 'Ammonites stahli is recombined as Acanthopleuroceras stahli'
- 'Ammonitina belongs to Ammonoidea'
- 'Arieticeras belongs to Arieticeratinae'
- 'Arieticeras accuratum is recombined as Leptaleoceras accuratum'
- 'Arieticeratinae belongs to Hildoceratidae'
- 'Aveyroniceras belongs to Dactylioceratidae'
- 'Canavaria belongs to Arieticeratinae'
- 'Coeloceras incertum is recombined as Reynesocoeloceras incertum'
- 'Crucilobiceras mouterdei is recombined as Metaderoceras mouterdei'
- 'Dactylioceratidae belongs to Eoderocerataceae'
- 'Dayiceras belongs to Polymorphitinae'
- 'Deroceras evolutum is recombined as Metaderoceras evolutum'
- 'Dubariceras belongs to Eoderoceratidae'
- 'Dubariceras freboldi belongs to Dubariceras'
- 'Eoderocerataceae belongs to Ammonitina'
- 'Eoderoceratidae belongs to Eoderocerataceae'
- 'Fanninoceras belongs to Oxynoticeratidae'
- 'Fanninoceras latum belongs to Fanninoceras'
- 'Fuciniceras belongs to Arieticeratinae'
- 'Harpoceratinae belongs to Hildoceratidae'
- 'Hildocerataceae belongs to Ammonitina'
- 'Hildoceratidae belongs to Hildocerataceae'
- 'Leptaleoceras belongs to Arieticeratinae'
- 'Metaderoceras belongs to Eoderoceratidae'
- 'Metaderoceras talkeetnaense belongs to Metaderoceras'
- 'Miltoceras belongs to Polymorphitinae'
- 'Oxynoticeratidae belongs to Psilocerataceae'
- 'Polymorphites belongs to Polymorphitinae'
- 'Polymorphitidae belongs to Eoderocerataceae'
- 'Polymorphitinae belongs to Polymorphitidae'
- 'Protogrammoceras belongs to Harpoceratinae'
- 'Psilocerataceae belongs to Ammonitina'
- 'Reynesocoeloceras belongs to Dactylioceratidae'
- 'Schloenbachia propinqua is recombined as Tiltoniceras propinquum'
- 'Tiltoniceras belongs to Harpoceratinae'
- 'Tropidoceras belongs to Acanthopleuroceratinae'
- 'Uptonia belongs to Polymorphitinae'
- 'Uptonia silviesi is recombined as Dubariceras silviesi'