Opinions from P. L. Smith and H. W. Tipper 1996
- 'Acanthopleuroceras belongs to Acanthopleuroceratinae'
- 'Acanthopleuroceras rursicosta belongs to Acanthopleuroceras' according to Buckman 1918
- 'Acanthopleuroceras rursicosta is recombined as Tropidoceras rursicosta'
- 'Acanthopleuroceras thomsoni belongs to Acanthopleuroceras'
- 'Acanthopleuroceras viligaensis is recombined as Amaltheus viligaensis'
- 'Acanthopleuroceras viligaensis belongs to Acanthopleuroceras' according to Tuchkov 1954
- 'Acanthopleuroceras whiteavesi belongs to Acanthopleuroceras' according to Smith and Tipper 1988
- 'Acanthopleuroceras whiteavesi belongs to Acanthopleuroceras'
- 'Acanthopleuroceratinae belongs to Polymorphitidae'
- 'Aegoceras aenigmaticum belongs to Aegoceras' according to Gemmellaro 1884
- 'Aegoceras aenigmaticum is recombined as Gemmellaroceras aenigmaticum'
- 'Aegoceras alloplocum belongs to Aegoceras' according to Gemmellaro 1884
- 'Aegoceras alloplocum is recombined as Gemmellaroceras alloplocum'
- 'Aegoceras sellae belongs to Aegoceras' according to Gemmellaro 1884
- 'Aegoceras sellae is recombined as Miltoceras sellae'
- 'Amaltheidae belongs to Eoderocerataceae'
- 'Amaltheus belongs to Amaltheidae'
- 'Amaltheus margaritatus belongs to Amaltheus' according to de Montford 1808
- 'Amaltheus margaritatus belongs to Amaltheus'
- 'Ammonites actaeon belongs to Ammonites' according to d'Ordigny 1844
- 'Ammonites actaeon is recombined as Tropidoceras actaeon'
- 'Ammonites algovianus is recombined as Arieticeras algovianum'
- 'Ammonites bechei belongs to Ammonites' according to Sowerby 1821
- 'Ammonites bechei is recombined as Liparoceras (Becheiceras) bechei'
- 'Ammonites centriglobus is recombined as Cymbites centriglobus'
- 'Ammonites confusus belongs to Ammonites' according to Quenstedt 1856
- 'Ammonites confusus is recombined as Polymorphites confusus'
- 'Ammonites domarensis belongs to Ammonites' according to Meneghini 1867
- 'Ammonites domarensis is recombined as Arieticeras domarense'
- 'Ammonites fieldingii belongs to Ammonites' according to Reynes 1868
- 'Ammonites fieldingii is recombined as Fieldingiceras fieldingi'
- 'Ammonites flandrini belongs to Ammonites' according to Dumortier 1869
- 'Ammonites flandrini is recombined as Tropidoceras flandrini'
- 'Ammonites kurrianus is recombined as Protogrammoceras (Protogrammoceras) kurrianum'
- 'Ammonites laevigatus belongs to Ammonites' according to Sowerby 1827
- 'Ammonites laevigatus is recombined as Cymbites laevigatus'
- 'Ammonites masseanus belongs to Ammonites' according to d'Orbigny 1844
- 'Ammonites masseanus is recombined as Tropidoceras masseanum'
- 'Ammonites micrasterias belongs to Ammonites' according to Meneghini 1874
- 'Ammonites micrasterias is recombined as Arieticeras micrasterias'
- 'Ammonites ragazzonii belongs to Ammonites' according to Hauer 1861
- 'Ammonites ragazzonii is recombined as Reynesoceras ragazzonii'
- 'Ammonites ruthenense belongs to Ammonites' according to Reynes 1868
- 'Ammonites ruthenense is recombined as Arieticeras ruthenense'
- 'Ammonites stokesi belongs to Ammonites' according to Sowerby 1818
- 'Ammonites stokesi is recombined as Amaltheus stokesi'
- 'Ammonites taylori belongs to Ammonites' according to Sowerby 1826
- 'Ammonites taylori is recombined as Phricodoceras taylori'
- 'Arieticeras belongs to Arieticeratinae'
- 'Arieticeras accuratum is recombined as Leptaleoceras accuratum'
- 'Arieticeras accuratum belongs to Arieticeras' according to Fucini 1931
- 'Arieticeras compressum belongs to Arieticeras' according to Monestier 1934
- 'Arieticeras compressum is recombined as Leptaleoceras compressum'
- 'Arieticeras lupheri belongs to Arieticeras' according to Imlay 1968
- 'Arieticeras lupheri belongs to Arieticeras'
- 'Arieticeratinae belongs to Hildoceratidae'
- 'Becheiceras was reranked as Liparoceras (Becheiceras) and belongs to Liparoceras'
- 'Canavaria belongs to Arieticeratinae'
- 'Coeloceras colubriforme is recombined as Reynesoceras colubriforme'
- 'Coeloceras colubriforme belongs to Coeloceras' according to Bettoni 1900
- 'Coeloceras incertum belongs to Coeloceras' according to Fucini 1905
- 'Coeloceras incertum is recombined as Reynesocoeloceras incertum'
- 'Coeloceras italicum belongs to Coeloceras' according to Fucini 1905
- 'Coeloceras italicum is recombined as Reynesoceras italicum'
- 'Crucilobiceras mouterdei is recombined as Metaderoceras mouterdei'
- 'Cycloceras flandrini obtusa belongs to Cycloceras flandrini' according to Futterer 1983
- 'Cycloceras flandrini obtusa is recombined as Tropidoceras flandrini obtusum'
- 'Cymbites belongs to Cymbitidae'
- 'Cymbites subcostulatus belongs to Cymbites' according to Spath 1926
- 'Cymbites subcostulatus is a subjective synonym of Cymbites laevigatus'
- 'Cymbitidae belongs to Psilocerataceae'
- 'Dactylioceratidae belongs to Eoderocerataceae'
- 'Deroceras evolutum belongs to Deroceras' according to Fucini 1924
- 'Deroceras evolutum is recombined as Metaderoceras evolutum'
- 'Dubariceras belongs to Eoderoceratidae'
- 'Dubariceras freboldi belongs to Dubariceras'
- 'Eoderocerataceae belongs to Ammonitina'
- 'Eoderoceratidae belongs to Eoderocerataceae'
- 'Fanninoceras belongs to Oxynoticeratidae'
- 'Fanninoceras (Charlotticeras) belongs to Fanninoceras'
- 'Fanninoceras (Charlotticeras) carteri belongs to Fanninoceras (Charlotticeras)'
- 'Fanninoceras (Charlotticeras) maudense belongs to Fanninoceras (Charlotticeras)'
- 'Fanninoceras (Fanninoceras) belongs to Fanninoceras'
- 'Fanninoceras (Fanninoceras) bodegae belongs to Fanninoceras (Fanninoceras)' according to McLearn 1932
- 'Fanninoceras (Fanninoceras) bodegae belongs to Fanninoceras (Fanninoceras)'
- 'Fanninoceras (Fanninoceras) crassum belongs to Fanninoceras (Fanninoceras)' according to McLearn 1932
- 'Fanninoceras (Fanninoceras) crassum belongs to Fanninoceras (Fanninoceras)'
- 'Fanninoceras (Fanninoceras) fannini belongs to Fanninoceras (Fanninoceras)' according to McLearn 1930
- 'Fanninoceras (Fanninoceras) fannini belongs to Fanninoceras (Fanninoceras)'
- 'Fanninoceras carlottense belongs to Fanninoceras' according to McLearn 1930
- 'Fanninoceras carlottense is recombined as Fanninoceras (Fanninoceras) carlottense'
- 'Fanninoceras kunae belongs to Fanninoceras' according to McLearn 1930
- 'Fanninoceras kunae is recombined as Fanninoceras (Fanninoceras) kunae'
- 'Fanninoceras latum is recombined as Fanninoceras (Fanninoceras) latum' according to McLearn 1930
- 'Fanninoceras latum is recombined as Fanninoceras (Fanninoceras) latum'
- 'Fanninoceras lowrii belongs to Fanninoceras' according to McLearn 1930
- 'Fanninoceras lowrii is a subjective synonym of Fanninoceras kunae'
- 'Fanninoceras oxyconum belongs to Fanninoceras' according to Hillebrandt 1981
- 'Fanninoceras oxyconum is a subjective synonym of Fanninoceras carlottense'
- 'Fieldingiceras belongs to Harpoceratinae'
- 'Fontanelliceras belongs to Arieticeratinae'
- 'Fuciniceras belongs to Harpoceratinae'
- 'Gemmellaroceras belongs to Polymorphitinae'
- 'Gleviceras belongs to Oxynoticeratidae'
- 'Harpoceras aequiondulatum is recombined as Protogrammoceras (Protogrammoceras) aequiondulatum'
- 'Harpoceras aequiondulatum belongs to Harpoceras' according to Bettoni 1900
- 'Harpoceras allifordense belongs to Harpoceras' according to McLearn 1930
- 'Harpoceras allifordense is recombined as Lioceratoides (Lioceratoides) allifordense'
- 'Harpoceras antiquum is recombined as Tiltoniceras antiquum'
- 'Harpoceras antiquum belongs to Harpoceras' according to Wright 1882
- 'Harpoceras erythraeum belongs to Harpoceras' according to Gemmellaro 1884
- 'Harpoceras erythraeum is recombined as Tropidoceras erythraeum'
- 'Harpoceras maurelli is recombined as Lioceratoides (Lioceratoides) maurelli'
- 'Harpoceras maurelli belongs to Harpoceras' according to McLearn 1930
- 'Harpoceras pseudofieldingii is recombined as Fieldingiceras pseudofieldingii'
- 'Harpoceras pseudofieldingii belongs to Harpoceras' according to Fucini 1904
- 'Harpoceratinae belongs to Hildoceratidae'
- 'Hildoceras disputabile belongs to Hildoceras' according to Fucini 1908
- 'Hildoceras disputabile is recombined as Arieticeras disputabile'
- 'Hildoceras intumescens is recombined as Fuciniceras intumescens'
- 'Hildoceras intumescens belongs to Hildoceras' according to Fucini 1901
- 'Hildoceras targionii is recombined as Fuciniceras targionii'
- 'Hildoceras targionii belongs to Hildoceras' according to Fucini 1905
- 'Hildocerataceae belongs to Ammonitina'
- 'Hildoceratidae belongs to Hildocerataceae'
- 'Leioceras grecoi is recombined as Lioceratoides (Lioceratoides) grecoi'
- 'Leioceras grecoi belongs to Leioceras' according to Fucini 1901
- 'Leptaleoceras belongs to Arieticeratinae'
- 'Lioceratoides belongs to Harpoceratinae'
- 'Lioceratoides (Lioceratoides) belongs to Lioceratoides'
- 'Lioceratoides (Lioceratoides) involutum belongs to Lioceratoides (Lioceratoides)'
- 'Lioceratoides (Pacificeras) belongs to Lioceratoides'
- 'Lioceratoides (Pacificeras) belongs to Lioceratoides' according to Repin 1970
- 'Liparoceras belongs to Liparoceratidae'
- 'Liparoceratidae belongs to Eoderocerataceae'
- 'Metaderoceras belongs to Eoderoceratidae'
- 'Metaderoceras talkeetnaense belongs to Metaderoceras'
- 'Miltoceras belongs to Eoderoceratidae'
- 'Oistoceras belongs to Liparoceratidae'
- 'Oistoceras compressum belongs to Oistoceras'
- 'Oregonites belongs to Arieticeratinae'
- 'Oregonites dawsoni belongs to Oregonites'
- 'Oxynoticeratidae belongs to Psilocerataceae'
- 'Paltarpites paltus is recombined as Protogrammoceras (Protogrammoceras) paltum'
- 'Paltarpites paltus belongs to Paltarpites' according to Buckman 1922
- 'Phricodoceras belongs to Phricodoceratidae'
- 'Phricodoceratinae was reranked as the family Phricodoceratidae and belongs to Eoderocerataceae'
- 'Phylloceras bonarellii belongs to Phylloceras' according to Bettoni 1900
- 'Phylloceras bonarellii belongs to Phylloceras'
- 'Polymorphites belongs to Polymorphitinae'
- 'Polymorphitidae belongs to Eoderocerataceae'
- 'Polymorphitinae belongs to Polymorphitidae'
- 'Praelioceras angionum belongs to Praelioceras' according to Fucini 1931
- 'Praelioceras angionum is recombined as Lioceratoides (Pacificeras) angionus'
- 'Protogrammoceras belongs to Harpoceratinae'
- 'Protogrammoceras (Matteiceras) belongs to Protogrammoceras'
- 'Protogrammoceras (Matteiceras) diornatum belongs to Protogrammoceras (Matteiceras)'
- 'Protogrammoceras (Matteiceras) diornatum belongs to Protogrammoceras (Matteiceras)' according to Dommergues et al. 1985
- 'Protogrammoceras (Protogrammoceras) belongs to Protogrammoceras'
- 'Protogrammoceras (Protogrammoceras) skidegatense belongs to Protogrammoceras (Protogrammoceras)'
- 'Pseudoskirroceras belongs to Eoderoceratidae'
- 'Pseudoskirroceras imlayi belongs to Pseudoskirroceras'
- 'Psilocerataceae belongs to Ammonitina'
- 'Reynesoceras belongs to Dactylioceratidae'
- 'Reynesocoeloceras belongs to Dactylioceratidae'
- 'Reynesocoeloceras grahami belongs to Reynesocoeloceras'
- 'Schloenbachia propinqua belongs to Schloenbachia' according to Whiteaves 1884
- 'Schloenbachia propinqua is recombined as Lioceratoides (Pacificeras) propinquum'
- 'Stephanoceras mortilleti belongs to Stephanoceras' according to Meneghini 1875
- 'Stephanoceras mortilleti is recombined as Reynesocoeloceras mortilleti'
- 'Tiltoniceras belongs to Harpoceratinae'
- 'Tragophylloceras belongs to Juraphyllitidae'
- 'Tropidoceras belongs to Acanthopleuroceratinae'
- 'Tropidoceras flandrini flandrini belongs to Tropidoceras flandrini' according to Dumortier 1869
- 'Tropidoceras flandrini flandrini belongs to Tropidoceras flandrini'
- 'Uptonia silviesi is recombined as Dubariceras silviesi'