Opinions from H. Summesberger 1979
- 'Acanthocerataceae belongs to Ammonitina'
- 'Ammonites draschei belongs to Ammonites' according to Redtenbacher 1873
- 'Ammonites draschei is recombined as Nowakites draschei'
- 'Ammonites gardeni is recombined as Hauericeras (Gardeniceras) gardeni'
- 'Ammonites isculensis is recombined as Eupachydiscus isculensis'
- 'Ammonites mitis is recombined as Gaudryceras mite'
- 'Ammonitina belongs to Lytoceratida'
- 'Anaklinoceras stephensoni belongs to Anaklinoceras' according to Collignon 1969
- 'Anaklinoceras stephensoni is a subjective synonym of Hyphantoceras (Madagascarites) amapondense'
- 'Ancyloceras krekeleri is recombined as Boehmoceras krekeleri'
- 'Ancylocerataceae belongs to Ancyloceratina'
- 'Ancyloceratina belongs to Lytoceratida'
- 'Baculites belongs to Baculitidae'
- 'Baculites fuchsi belongs to Baculites' according to Redtenbacher 1873
- 'Baculites fuchsi belongs to Baculites'
- 'Baculites tanakae belongs to Baculites' according to Matsumoto and Obata 1963
- 'Baculites tanakae is corrected as Baculites tanakai and belongs to Baculites'
- 'Baculitidae belongs to Ancylocerataceae'
- 'Boehmoceras belongs to Phlycticrioceratidae'
- 'Boehmoceras loescheri belongs to Boehmoceras' according to Riedel 1931
- 'Boehmoceras loescheri belongs to Boehmoceras'
- 'Collignoniceratidae belongs to Acanthocerataceae'
- 'Desmocerataceae belongs to Ammonitina'
- 'Desmoceratidae belongs to Desmocerataceae'
- 'Diaziceratinae belongs to Ammonitina'
- 'Diplomoceras belongs to Diplomoceratinae'
- 'Diplomoceratinae belongs to Turrilitidae'
- 'Eupachydiscus belongs to Pachydiscidae'
- 'Gardeniceras was reranked as Hauericeras (Gardeniceras) and belongs to Hauericeras'
- 'Gaudryceras belongs to Gaudryceratidae'
- 'Gaudryceratidae belongs to Tetragonitaceae'
- 'Hamites largesulcatus is recombined as Diplomoceras largesulcatum'
- 'Hamites tenuisulcatus is recombined as Diplomoceras tenuisulcatum'
- 'Hauericeras belongs to Hauericeratinae'
- 'Hauericeratinae belongs to Desmoceratidae'
- 'Heteroceras amapondense is recombined as Hyphantoceras (Madagascarites) amapondense'
- 'Hoplitaceaea is corrected as Hoplitaceae and belongs to Ammonitina'
- 'Hyphantoceras belongs to Nostoceratinae'
- 'Kitchinites belongs to Puzosiinae'
- 'Kitchinites stenomphalus belongs to Kitchinites'
- 'Lytoceratida belongs to Ammonoidea'
- 'Lytoceratina belongs to Lytoceratida'
- 'Madagascarites was reranked as Hyphantoceras (Madagascarites) and belongs to Hyphantoceras'
- 'Nostoceratidae was reranked as the subfamily Nostoceratinae and belongs to Turrilitidae'
- 'Nowakites belongs to Pachydiscidae'
- 'Pachydiscidae belongs to Desmocerataceae'
- 'Pachydiscus seppenradensis is recombined as Parapuzosia seppenradensis'
- 'Parapuzosia belongs to Puzosiinae'
- 'Peroniceratidae was reranked as the subfamily Peroniceratinae and belongs to Collignoniceratidae'
- 'Phlycticrioceratidae belongs to Ancylocerataceae'
- 'Placenticeras belongs to Placenticeratidae'
- 'Placenticeras depressum belongs to Placenticeras' according to Hyatt 1903
- 'Placenticeras depressum is recombined as Stantonoceras depressum'
- 'Placenticeras maherndli belongs to Placenticeras'
- 'Placenticeras paraplanum belongs to Placenticeras'
- 'Placenticeratidae belongs to Hoplitaceae'
- 'Puzosiinae belongs to Desmoceratidae'
- 'Reginaites belongs to Peroniceratinae'
- 'Reginaites gappi belongs to Reginaites'
- 'Skoumalia belongs to Diaziceratinae'
- 'Skoumalia austriaca belongs to Skoumalia'
- 'Stantonoceras belongs to Placenticeratidae'
- 'Tetragonitaceae belongs to Lytoceratina'
- 'Turrilitidae belongs to Ancylocerataceae'