Opinions from W. J. Kennedy and W. A. Cobban 1994
- 'Ammonites placenta is recombined as Placenticeras placenta'
- 'Anaklinoceras belongs to Nostoceratidae'
- 'Anaklinoceras reflexum belongs to Anaklinoceras' according to Stephenson 1941
- 'Anaklinoceras reflexum belongs to Anaklinoceras'
- 'Anaklinoceras tenuicostatum belongs to Anaklinoceras'
- 'Ancyloceras cheyenensis is recombined as Didymoceras cheyennense'
- 'Baculites belongs to Baculitidae'
- 'Baculites ovata is corrected as Baculites ovatus and belongs to Baculites'
- 'Baculites undatus belongs to Baculites'
- 'Didymoceras belongs to Nostoceratidae'
- 'Diplomoceratinae belongs to Diplomoceratidae'
- 'Eulophoceras belongs to Sphenodiscidae'
- 'Eulophoceras natalense belongs to Eulophoceras'
- 'Hamites annulifer is recombined as Solenoceras annulifer'
- 'Hoploscaphites belongs to Scaphitinae'
- 'Hoploscaphites vistulensis belongs to Hoploscaphites' according to Blaszkiewicz 1980
- 'Hoploscaphites vistulensis belongs to Hoploscaphites'
- 'Jeletzkytes belongs to Scaphitinae'
- 'Nostoceras belongs to Nostoceratidae'
- 'Nostoceras (Nostoceras) belongs to Nostoceras'
- 'Nostoceras draconis is recombined as Nostoceras (Nostoceras) draconis'
- 'Oxybeloceras belongs to Polyptychoceratinae'
- 'Pachydiscus belongs to Pachydiscidae'
- 'Pachydiscus (Pachydiscus) belongs to Pachydiscus'
- 'Placenticeras belongs to Placenticeratidae'
- 'Polyptychoceratinae belongs to Diplomoceratidae'
- 'Ptychoceras crassum belongs to Ptychoceras' according to Whitfield 1877
- 'Ptychoceras crassum is recombined as Oxybeloceras crassum'
- 'Ptychoceras meekanum belongs to Ptychoceras' according to Whitfield 1877
- 'Ptychoceras meekanum is recombined as Oxybeloceras meekanum'
- 'Scaphites compressus is recombined as Jeletzkytes compressus'
- 'Scaphites compressus belongs to Scaphites' according to Roemer 1841
- 'Scaphitinae belongs to Scaphitidae'
- 'Solenoceras belongs to Diplomoceratinae'