Opinions from V. V. Arkadiev et al. 2000
- 'Acanthocerataceae belongs to Lytoceratina'
- 'Acanthoceratidae belongs to Acanthocerataceae'
- 'Allocrioceras belongs to Anisoceratidae'
- 'Allocrioceras strangulatum belongs to Allocrioceras'
- 'Ammonites constrictus is recombined as Hoploscaphites constrictus'
- 'Ammonites diphylloides is recombined as Desmophyllites diphylloides'
- 'Ammonites elimatus is recombined as Haploceras elimatum'
- 'Ammonites epiplectus is recombined as Pachydiscus epiplectus'
- 'Ammonites euthymi belongs to Ammonites' according to Pictet 1867
- 'Ammonites euthymi is recombined as Euthymiceras euthymi'
- 'Ammonites galicianus is recombined as Pseudokossmaticeras galicianum'
- 'Ammonites gollevillensis is recombined as Pachydiscus gollevillensis'
- 'Ammonites grasianus is recombined as Neolissoceras grasianum'
- 'Ammonites haldemsis is recombined as Pachydiscus haldemsis'
- 'Ammonites inanis belongs to Ammonites' according to Stoliczka 1865
- 'Ammonites inanis is recombined as Desmoceras inane'
- 'Ammonites kayei is recombined as Gaudryceras kayei'
- 'Ammonites latidorsatus is recombined as Desmoceras latidorsatum'
- 'Ammonites leptonema is recombined as Mesogaudryceras leptonema'
- 'Ammonites mayoriana is recombined as Puzosia mayoriana'
- 'Ammonites neubergicus is recombined as Pachydiscus neubergicus'
- 'Ammonites ptychoicus is recombined as Ptychophylloceras ptychoicum'
- 'Ammonites ptychoicus belongs to Ammonites' according to Quenstedt 1845
- 'Ammonites ptychostoma belongs to Ammonites' according to Benecke 1865
- 'Ammonites ptychostoma is recombined as Macrophylloceras ptychostoma'
- 'Ammonites quadrisulcatus is recombined as Lytoceras (Protetragonites) quadrisulcatum' according to Kulkinskaia-Voronetz 1933
- 'Ammonites rostratus is recombined as Mortoniceras rostratum'
- 'Ammonites sulcatus is recombined as Hauericeras sulcatum'
- 'Ammonites surya is recombined as Phylloceras (Neophylloceras) surya'
- 'Ancyloceras retrorsum is recombined as Neoglyptoxoceras retrorsum'
- 'Ancylocerataceae belongs to Ancyloceratina'
- 'Ancyloceratina belongs to Ammonitida'
- 'Anisoceras belongs to Anisoceratidae'
- 'Anisoceras perarmatum belongs to Anisoceras'
- 'Anisoceratidae belongs to Turrilitaceae'
- 'Baculites cylindracea is recombined as Diplomoceras cylindraceum'
- 'Baculitidae belongs to Turrilitaceae'
- 'Belbekiceras belongs to Neocomitinae'
- 'Belbekiceras belbekii belongs to Belbekiceras' according to Baraboschkin 1997
- 'Belbekiceras belbekii belongs to Belbekiceras'
- 'Berriasella (Malbosiceras) was reranked as Malbosiceras and belongs to Berriasellinae'
- 'Berriasellidae was reranked as the subfamily Berriasellinae and belongs to Neocomitidae'
- 'Biasaloceras belongs to Lytoceratidae'
- 'Bostrychoceras belongs to Nostoceratinae'
- 'Brancoceratidae belongs to Acanthocerataceae'
- 'Calliphylloceratinae belongs to Phylloceratidae'
- 'Dalmasiceras belongs to Berriasellinae'
- 'Dalmasiceras was reranked as Hoplites (Dalmasiceras) and belongs to Hoplites' according to Djanelidze 1922
- 'Desmoceras belongs to Desmoceratinae'
- 'Desmocerataceae belongs to Lytoceratina'
- 'Desmoceratidae belongs to Desmocerataceae'
- 'Desmoceratinae belongs to Desmoceratidae'
- 'Desmophyllites belongs to Desmoceratinae'
- 'Diplomoceras belongs to Diplomoceratinae'
- 'Diplomoceratinae belongs to Turrilitidae'
- 'Eupachydiscus belongs to Pachydiscidae'
- 'Euthymiceras belongs to Berriasellinae'
- 'Gaudryceras belongs to Gaudryceratidae'
- 'Gaudryceratidae belongs to Tetragonitaceae'
- 'Hamites belongs to Hamitidae'
- 'Hamites phaleratus is recombined as Parasolenoceras phaleratum'
- 'Hamites virgulatus belongs to Hamites'
- 'Hamitidae belongs to Turrilitaceae'
- 'Haploceras belongs to Haploceratidae'
- 'Haplocerataceae belongs to Lytoceratina'
- 'Haploceratidae belongs to Haplocerataceae'
- 'Hauericeras belongs to Hauericeratinae'
- 'Hauericeras fayoli belongs to Hauericeras'
- 'Hauericeratinae belongs to Desmoceratidae'
- 'Hemihoplitidae belongs to Ancylocerataceae'
- 'Holcostephanus (Spiticeras) obliquelobatus is recombined as Spiticeras obliquelobatum'
- 'Holcostephanus (Spiticeras) orientale belongs to Holcostephanus (Spiticeras)' according to Kilian 1910
- 'Holcostephanus (Spiticeras) orientale is recombined as Spiticeras orientale'
- 'Hoplites (Dalmasiceras) crassicostatum belongs to Hoplites (Dalmasiceras)' according to Djanelidze 1922
- 'Hoplites (Dalmasiceras) crassicostatum is recombined as Dalmasiceras crassicostatum'
- 'Hoploscaphites belongs to Scaphitinae'
- 'Kossmaticeratidae belongs to Desmocerataceae'
- 'Kossmaticeratinae belongs to Kossmaticeratidae'
- 'Lechites belongs to Baculitidae'
- 'Lechites moreti belongs to Lechites'
- 'Lytoceras (Protetragonites) quadrisulcatum taurica belongs to Lytoceras (Protetragonites) quadrisulcatum' according to Kuljinskaia-Voronetz 1933
- 'Lytoceras (Protetragonites) quadrisulcatum taurica is recombined as Protetragonites tauricus'
- 'Lytoceras liebigi is recombined as Biasaloceras liebigi'
- 'Lytocerataceae belongs to Lytoceratina'
- 'Lytoceratidae belongs to Lytocerataceae'
- 'Lytoceratina belongs to Ammonitida'
- 'Macrophylloceras belongs to Phylloceratinae'
- 'Mantelliceras belongs to Mantelliceratinae'
- 'Mantelliceras picteti belongs to Mantelliceras'
- 'Mantelliceratinae belongs to Acanthoceratidae'
- 'Mariella belongs to Turrilitinae'
- 'Mariella crassituberculata belongs to Mariella' according to Spath 1937
- 'Mariella crassituberculata belongs to Mariella'
- 'Mesogaudryceras belongs to Gaudryceratidae'
- 'Mortoniceras belongs to Mortoniceratinae'
- 'Mortoniceratinae belongs to Brancoceratidae'
- 'Neocomitidae belongs to Perisphinctaceae'
- 'Neocomitinae belongs to Neocomitidae'
- 'Neocosmoceras belongs to Berriasellinae'
- 'Neoglyptoxoceras belongs to Diplomoceratinae'
- 'Neolissoceras belongs to Haploceratidae'
- 'Neophylloceras was reranked as Phylloceras (Neophylloceras) and belongs to Phylloceras'
- 'Nostoceratidae was reranked as the subfamily Nostoceratinae and belongs to Turrilitidae'
- 'Olcostephanidae belongs to Perisphinctaceae'
- 'Olcostephaninae belongs to Olcostephanidae'
- 'Olcostephanus belongs to Olcostephaninae'
- 'Olcostephanus (Olcostephanus) belongs to Olcostephanus'
- 'Olcostephanus globosus belongs to Olcostephanus' according to Spath 1939
- 'Olcostephanus globosus is recombined as Olcostephanus (Olcostephanus) globosus'
- 'Ostlingoceras belongs to Turrilitinae'
- 'Pachydiscidae belongs to Desmocerataceae'
- 'Pachydiscus belongs to Pachydiscidae'
- 'Pachydiscus koeneni is a subjective synonym of Pachydiscus haldemsis'
- 'Pachydiscus levyi belongs to Pachydiscus' according to de Grossouvre 1894
- 'Pachydiscus levyi is recombined as Eupachydiscus levyi'
- 'Pachydiscus rhodanicus is recombined as Tongoboryceras rhodanicum'
- 'Pachydiscus sayni belongs to Pachydiscus' according to de Grossouvre 1894
- 'Pachydiscus sayni is recombined as Eupachydiscus sayni'
- 'Parasolenoceras belongs to Nostoceratinae'
- 'Perisphinctaceae belongs to Lytoceratina'
- 'Phylloceras belongs to Phylloceratinae'
- 'Phyllocerataceae belongs to Phylloceratina'
- 'Phylloceratidae belongs to Phyllocerataceae'
- 'Phylloceratinae belongs to Phylloceratidae'
- 'Phylloceratitida was reranked as the suborder Phylloceratina and belongs to Ammonitida'
- 'Protetragonites belongs to Protetragonitidae'
- 'Protetragonites was reranked as Lytoceras (Protetragonites) and belongs to Lytoceras' according to Kulkinskaia-Voronetz 1933
- 'Protetragonitidae belongs to Tetragonitaceae'
- 'Pseudacanthodiscus belongs to Neocomitinae'
- 'Pseudacanthodiscus crymicus belongs to Pseudacanthodiscus' according to Baraboschkin 1997
- 'Pseudacanthodiscus crymicus belongs to Pseudacanthodiscus'
- 'Pseudokossmaticeras belongs to Kossmaticeratinae'
- 'Pseudothurmannia belongs to Hemihoplitidae'
- 'Pseudothurmannia picteti belongs to Pseudothurmannia'
- 'Ptychophylloceras belongs to Calliphylloceratinae'
- 'Puzosia belongs to Puzosiinae'
- 'Puzosia (Anapuzosia) was reranked as Anapuzosia and belongs to Puzosiinae'
- 'Puzosia (Anapuzosia) naidini is recombined as Anapuzosia naidini'
- 'Puzosia (Anapuzosia) naidini belongs to Puzosia (Anapuzosia)' according to Marcinowski 1977
- 'Puzosiinae belongs to Desmoceratidae'
- 'Scaphitaceae belongs to Ancyloceratina'
- 'Scaphites belongs to Scaphitinae'
- 'Scaphites geinitzii belongs to Scaphites'
- 'Scaphitidae belongs to Scaphitaceae'
- 'Scaphitinae belongs to Scaphitidae'
- 'Spiticeras was reranked as Holcostephanus (Spiticeras) and belongs to Holcostephanus' according to Uhlig 1903
- 'Spiticeras belongs to Spiticeratinae'
- 'Spiticeras multiforme belongs to Spiticeras'
- 'Spiticeras multiforme belongs to Spiticeras' according to Djanelidze 1922
- 'Spiticeratinae belongs to Olcostephanidae'
- 'Subschloenbachia perinflata is recombined as Mortoniceras perinflatum'
- 'Tetragonitaceae belongs to Lytoceratina'
- 'Thurmannia pertransiens belongs to Thurmannia' according to Sayn 1907
- 'Thurmannia pertransiens is recombined as Thurmanniceras pertransiens'
- 'Thurmanniceras belongs to Neocomitinae'
- 'Tongoboryceras belongs to Pachydiscidae'
- 'Turrilitaceae belongs to Ancyloceratina'
- 'Turrilites bergeri is recombined as Mariella bergeri'
- 'Turrilites polyplocus is recombined as Bostrychoceras polyplocum'
- 'Turrilites puzosianus is recombined as Ostlingoceras puzosianum'
- 'Turrilitidae belongs to Turrilitaceae'
- 'Turrilitinae belongs to Turrilitidae'