Opinions from W. J. Kennedy et al. 1997
- 'Acanthocerataceae belongs to Ammonitina'
- 'Ammonites conradi belongs to Ammonites' according to Morton 1834
- 'Ammonites conradi is recombined as Discoscaphites conradi'
- 'Ammonites lobata belongs to Ammonites' according to Tuomey 1856
- 'Ammonites lobata is recombined as Sphenodiscus lobatus'
- 'Ammonites nebrascensis belongs to Ammonites' according to Owen 1852
- 'Ammonites nebrascensis is recombined as Jeletzkytes nebrascensis'
- 'Ammonites pleurisepta is recombined as Sphenodiscus pleurisepta'
- 'Ammonites pleurisepta belongs to Ammonites' according to Conrad 1857
- 'Ammonitida belongs to Ammonoidea'
- 'Ancyloceratina belongs to Ammonoidea'
- 'Baculites belongs to Baculitidae'
- 'Baculites vertebralis belongs to Baculites'
- 'Baculitidae belongs to Turrilitaceae'
- 'Diplomoceratidae belongs to Turrilitaceae'
- 'Diplomoceratinae belongs to Diplomoceratidae'
- 'Discoscaphites belongs to Scaphitinae'
- 'Eubaculites belongs to Baculitidae'
- 'Giralites belongs to Baculitidae'
- 'Giralites latecarinatus is recombined as Eubaculites latecarinatus'
- 'Glyptoxoceras belongs to Diplomoceratinae'
- 'Hamites rugatus is recombined as Glyptoxoceras rugatum'
- 'Jeletzkytes belongs to Scaphitinae'
- 'Karlwaageites is a subjective synonym of Jeletzkytes'
- 'Scaphitaceae belongs to Ancyloceratina'
- 'Scaphites (Ammonites) nodosus is recombined as Jeletzkytes nodosus'
- 'Scaphites (Discoscaphites) conradi gulosus is recombined as Discoscaphites gulosus'
- 'Scaphitidae belongs to Scaphitaceae'
- 'Scaphitinae belongs to Scaphitidae'
- 'Sphenodiscidae belongs to Acanthocerataceae'
- 'Sphenodiscus belongs to Sphenodiscidae'
- 'Turrilitaceae belongs to Ancyloceratina'