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'