Opinions from C. W. Wright et al. 1996
- 'Abrytasites is a misspelling of Abrytusites'
- 'Abrytusites [misspelled as Abrytasites] belongs to Puzosiinae'
- 'Acanthoceras belongs to Acanthoceratinae'
- 'Acanthoceras (Mantelliceras) pervinquierei is recombined as Eucalycoceras pervinquierei'
- 'Acanthoceras (Prionotropis) subvicinale is recombined as Paracalycoceras subvicinale'
- 'Acanthoceras (Pseudacanthoceras) is a subjective synonym of Calycoceras (Newboldiceras)'
- 'Acanthoceras aberrans is recombined as Lotzeites aberrans'
- 'Acanthoceras albertense is recombined as Dunveganoceras (Dunveganoceras) albertense'
- 'Acanthoceras gadeni is recombined as Nigericeras gadeni' according to Schneegans 1943
- 'Acanthoceras gadeni is recombined as Nigericeras gadeni'
- 'Acanthoceras haughi is recombined as Pseudocalycoceras (Haugiceras) haughi' according to Thomel 1972
- 'Acanthoceras haughi is recombined as Calycoceras (Proeucalycoceras) haughi'
- 'Acanthoceras kanabense is a subjective synonym of Scaphites septemseriatus'
- 'Acanthoceras tapara is recombined as Calycoceras (Newboldiceras) tapara'
- 'Acanthocerataceae belongs to Ammonitina'
- 'Acanthoceratidae belongs to Acanthocerataceae'
- 'Acanthoceratinae belongs to Acanthoceratidae'
- 'Acanthohoplites belongs to Acanthoplitinae'
- 'Acanthohoplitinae is corrected as Acanthoplitinae and belongs to Parahoplitidae'
- 'Acantholytoceras belongs to Crioceratitinae'
- 'Acompsoceras belongs to Acanthoceratinae'
- 'Aconeceratidae was reranked as the subfamily Aconeceratinae and belongs to Oppeliidae'
- 'Adkinsia belongs to Flickiinae'
- 'Adkinsites was reranked as Oxytropidoceras (Adkinsites) and belongs to Oxytropidoceras'
- 'Ainoceras was reranked as Jouaniceras (Ainoceras) and belongs to Jouaniceras'
- 'Ainoceras kamuyi is recombined as Jouaniceras (Ainoceras) kamuyi'
- 'Ainoceras kamuyi belongs to Ainoceras' according to Matsumoto in Matsumoto & Kaine 1967
- 'Aioloceras belongs to Pseudosaynellinae'
- 'Alopecoceras belongs to Gastroplitinae'
- 'Alzadites belongs to Acanthoceratinae'
- 'Ammonites (Scaphites) ramosus belongs to Ammonites (Scaphites)' according to Meek 1857
- 'Ammonites (Scaphites) ramosus is recombined as Hypophylloceras (Neophylloceras) ramosus'
- 'Ammonites batesii is recombined as Gabbioceras batesi'
- 'Ammonites belknapi belongs to Ammonites' according to Marcou 1858
- 'Ammonites belknapi is recombined as Oxytropidoceras (Adkinsites) belknapi'
- 'Ammonites bunburianum is recombined as Protacanthoceras bunburianus'
- 'Ammonites cunningtoni is recombined as Cunningtoniceras cunningtoni'
- 'Ammonites deverianus is recombined as Romaniceras (Romaniceras) deverianus'
- 'Ammonites elimatus is recombined as Haploceras elimatus'
- 'Ammonites euthymi is recombined as Neocosmoceras euthymi'
- 'Ammonites exoticus belongs to Ammonites' according to Oppel 1863
- 'Ammonites exoticus is recombined as Pterolytoceras exoticus'
- 'Ammonites gentoni is recombined as Calycoceras (Gentoniceras) gentoni'
- 'Ammonites goupilianus belongs to Ammonites' according to d'Orbigny 1841
- 'Ammonites goupilianus is recombined as Prohauericeras goupilianus' according to Nowak 1913
- 'Ammonites grasianus is recombined as Neolissoceras grasianus'
- 'Ammonites harpax is recombined as Pseudocalycoceras harpax' according to Thomel 1969
- 'Ammonites harpax is recombined as Pseudocalycoceras harpax'
- 'Ammonites heterophyllus is recombined as Phylloceras heterophyllus'
- 'Ammonites immanis is recombined as Hemilytoceras immanis'
- 'Ammonites immanis belongs to Ammonites' according to Oppel 1865
- 'Ammonites inaequalicostatus is recombined as Eulytoceras inaequalicostatus'
- 'Ammonites infundibulum is recombined as Phyllopachyceras infundibulum'
- 'Ammonites jaubertianus belongs to Ammonites' according to d'Orbigny 1850
- 'Ammonites jaubertianus is recombined as Jauberticeras jaubertianus'
- 'Ammonites lamarcki belongs to Ammonites' according to Bowditch 1822
- 'Ammonites lamarcki is recombined as Ammonoceratites lamarcki'
- 'Ammonites liptoviensis belongs to Ammonites' according to Zeuschner 1856
- 'Ammonites liptoviensis is recombined as Pseudohaploceras liptoviensis'
- 'Ammonites macrotelus belongs to Ammonites' according to Oppel 1865
- 'Ammonites macrotelus is recombined as Cyrtosiceras macrotelus'
- 'Ammonites mantelli is recombined as Mantelliceras mantelli' according to Hyatt 1903
- 'Ammonites nodosoides is recombined as Mammites nodosoides' according to Laube and Bruder 1887
- 'Ammonites obesus belongs to Ammonites' according to Stoliczka 1865
- 'Ammonites obesus is recombined as Tropitoides obesus' according to Spath 1925
- 'Ammonites partschi belongs to Ammonites' according to Hauer 1854
- 'Ammonites partschi is recombined as Phylloceras (Partschiceras) partschi'
- 'Ammonites pentagonus is recombined as Eucalycoceras pentagonum'
- 'Ammonites proteus is recombined as Falloticeras proteus'
- 'Ammonites quadrisulcatus belongs to Ammonites' according to d'Orbigny 1841
- 'Ammonites quadrisulcatus is recombined as Protetragonites quadrisulcatus'
- 'Ammonites reveliereanus is recombined as Spathites (Jeanrogericeras) reveliereanus'
- 'Ammonites rusticus is recombined as Metasigaloceras rusticum'
- 'Ammonites tortisulcatus belongs to Ammonites' according to d'Orbigny 1841
- 'Ammonites tortisulcatus is recombined as Sowerbyceras tortisulcatus'
- 'Ammonites ventanillensis is recombined as Mojsisoviczia ventanillensis'
- 'Ammonites wiestii is recombined as Paracalycoceras wiestii' according to Spath 1925
- 'Ammonites wiestii belongs to Ammonites' according to Sharpe 1857
- 'Ammonites zetes belongs to Ammonites' according to d'Orbigny 1850
- 'Ammonites zetes is recombined as Phylloceras (Zetoceras) zetes'
- 'Ammonites zonarius belongs to Ammonites' according to Oppel 1865
- 'Ammonites zonarius is recombined as Substreblites zonarius'
- 'Ammonitina belongs to Ammonoidea'
- 'Ammonoceratites belongs to Lytoceratinae'
- 'Ammonoidea belongs to Cephalopoda'
- 'Anacleoniceras was reranked as Cleoniceras (Anacleoniceras) and belongs to Cleoniceras'
- 'Anadesmoceras belongs to Cleoniceratidae'
- 'Anagaudryceras belongs to Gaudryceratidae'
- 'Anahoplites belongs to Anahoplitinae'
- 'Anahoplitinae belongs to Hoplitidae'
- 'Anahoplitoides belongs to Anahoplitinae'
- 'Ancylocerataceae belongs to Ancyloceratina'
- 'Ancyloceratina belongs to Ammonoidea'
- 'Andersonites is a subjective synonym of Gauthiericeras'
- 'Andersonites listeri is recombined as Gauthiericeras listeri'
- 'Andesites is a subjective synonym of Argentiniceras'
- 'Aneuretoceras belongs to Texanitinae'
- 'Arcthoplites belongs to Cleoniceratidae'
- 'Arestoceras belongs to Mortoniceratinae'
- 'Argentiniceras belongs to Neocomitinae'
- 'Askoloboceras is a subjective synonym of Hysteroceras'
- 'Astiericeras belongs to Astiericeratidae'
- 'Astiericeratidae belongs to Douvilleicerataceae'
- 'Astieridiscus belongs to Holcodiscidae'
- 'Banikoceras belongs to Berriasellinae'
- 'Barroisiceras belongs to Barroisiceratinae'
- 'Bauchioceras (Wrightoceras) was reranked as Wrightoceras and belongs to Pseudotissotiinae'
- 'Benueites belongs to Acanthoceratinae'
- 'Berriasella (Malbosiceras) was reranked as Malbosiceras and belongs to Berriasellinae'
- 'Beudanticeras belongs to Beudanticeratinae'
- 'Beudanticeras (Grantziceras) was reranked as Grantziceras and belongs to Beudanticeratinae'
- 'Beudantiella is a subjective synonym of Cophinoceras'
- 'Bevahites belongs to Texanitinae'
- 'Bihenduloceras is a subjective synonym of Spiticeras'
- 'Binneyitidae belongs to Haplocerataceae'
- 'Boliteceras belongs to Beudanticeratinae'
- 'Borealites belongs to Tolliinae'
- 'Bornhardticeras belongs to Streblitinae'
- 'Brancoceras carinatum is recombined as Brancoceras (Brancoceras) carinatum'
- 'Brancoceratinae belongs to Brancoceratidae'
- 'Brewericeras belongs to Cleoniceratidae'
- 'Bucaillella belongs to Sonneratiinae'
- 'Buccinammonites belongs to Mammitinae'
- 'Buchiceras belongs to Mammitinae'
- 'Budaiceras belongs to Stoliczkaiinae'
- 'Burroceras is a subjective synonym of Euomphaloceras'
- 'Burroceras clydense is recombined as Euomphaloceras clydense'
- 'Californiceras is a subjective synonym of Simbirskites'
- 'Callihoplites belongs to Hoplitinae'
- 'Calliphylloceras belongs to Calliphylloceratinae'
- 'Calliphylloceratinae belongs to Phylloceratidae'
- 'Calliptychoceras belongs to Neocomitinae'
- 'Callizoniceras belongs to Puzosiinae'
- 'Calycoceras belongs to Acanthoceratinae'
- 'Calycoceras (Calycoceras) belongs to Calycoceras'
- 'Calycoceras (Conlinoceras) was reranked as Conlinoceras and belongs to Acanthoceratinae'
- 'Calycoceras (Conlinoceras) gilberti is recombined as Conlinoceras gilberti'
- 'Calycoceras (Hourcqiceras) belongs to Calycoceras'
- 'Calycoceras (Hourcqiceras) hourcqi belongs to Calycoceras (Hourcqiceras)' according to Collignon 1939
- 'Calycoceras (Newboldiceras) belongs to Calycoceras'
- 'Carinolytoceras belongs to Lytoceratinae'
- 'Carinolytoceras carinatum belongs to Carinolytoceras' according to Wiedmann 1962
- 'Carinolytoceras carinatum belongs to Carinolytoceras'
- 'Carinophylloceras belongs to Phylloceratinae'
- 'Carinophylloceras collignoni belongs to Carinophylloceras'
- 'Carstenia was reranked as Pulchellia (Carstenia) and belongs to Pulchellia'
- 'Caspianites belongs to Ancyloceratinae'
- 'Chigaroceras belongs to Berriasellinae'
- 'Chimbuites belongs to Pachydiscidae'
- 'Choffaticeras belongs to Pseudotissotiinae'
- 'Christophoceras is a subjective synonym of Schlueterella'
- 'Cicatrites belongs to Macroscaphitidae'
- 'Cloioceras belongs to Mathoceratinae'
- 'Coahuilites belongs to Sphenodiscinae'
- 'Codazziceras belongs to Euomphaloceratinae'
- 'Cophinoceras belongs to Beudanticeratinae'
- 'Coronites belongs to Pulchelliidae'
- 'Cottreauites is a subjective synonym of Paracalycoceras'
- 'Craspeditidae was reranked as the subfamily Craspeditinae and belongs to Polyptychitidae'
- 'Craspedodiscus was reranked as Simbirskites (Craspedodiscus) and belongs to Simbirskites'
- 'Crioceras astierianum belongs to Crioceras' according to d'Orbigny 1841
- 'Crioceras astierianum is recombined as Pictetia astierianum'
- 'Cruasiceras belongs to Endemoceratinae'
- 'Cryptometoicoceras belongs to Mammitinae'
- 'Cunningtoniceras belongs to Acanthoceratinae'
- 'Cuyaniceras belongs to Neocomitinae'
- 'Cymahoplites belongs to Cleoniceratidae'
- 'Cyrtosiceras belongs to Streblitinae'
- 'Damesites belongs to Desmoceratidae'
- 'Daradiceras belongs to Sphenodiscinae'
- 'Defordiceras belongs to Texanitinae'
- 'Deshayesitaceae belongs to Ancyloceratina'
- 'Desmoceras belongs to Desmoceratinae'
- 'Desmoceras (Desmoceras) belongs to Desmoceras'
- 'Desmocerataceae belongs to Ammonitina'
- 'Diaziceras belongs to Barroisiceratinae'
- 'Dichotomites oregonensis is recombined as Homolsomites oregonensis'
- 'Didymoceras was reranked as Nostoceras (Didymoceras) and belongs to Nostoceras'
- 'Dimorphoplites belongs to Hoplitinae'
- 'Diplasioceras is a subjective synonym of Rhytidoceras'
- 'Dipoloceroides is a subjective synonym of Mojsisoviczia'
- 'Donenriquoceras belongs to Pseudotissotiinae'
- 'Douvilleiceras belongs to Douvilleiceratinae'
- 'Douvilleicerataceae belongs to Ancyloceratina'
- 'Douvilleiceratidae belongs to Douvilleicerataceae'
- 'Douvilleiceratinae belongs to Douvilleiceratidae'
- 'Dunveganoceras belongs to Acanthoceratinae'
- 'Dunveganoceras (Dunveganoceras) belongs to Dunveganoceras' according to Warren and Stelck 1940
- 'Eboroceras is a subjective synonym of Forresteria'
- 'Elobiceras belongs to Mortoniceratinae'
- 'Endemoceras is a subjective synonym of Lyticoceras'
- 'Eodesmoceras is a subjective synonym of Desmoceras'
- 'Eodesmoceras is a subjective synonym of Puzosia' according to Busnardo and Thieuloy 1989
- 'Eogaudryceras belongs to Gaudryceratidae'
- 'Eogaudryceras (Eogaudryceras) belongs to Eogaudryceras'
- 'Eogunnarites belongs to Marshallitinae'
- 'Eomadrasites belongs to Marshallitinae'
- 'Eopachydiscus belongs to Pachydiscidae'
- 'Eotetragonites was reranked as Eogaudryceras (Eotetragonites) and belongs to Eogaudryceras'
- 'Epancyloceras belongs to Ancyloceratinae'
- 'Epiglyptoxoceras is a subjective synonym of Neoglyptoxoceras'
- 'Epihoplites belongs to Hoplitinae'
- 'Erdenella is a subjective synonym of Subalpinites'
- 'Erichsenites belongs to Coilopoceratidae'
- 'Erioliceras belongs to Brancoceratinae'
- 'Erioliceratinae is a subjective synonym of Brancoceratinae'
- 'Eucalycoceras belongs to Acanthoceratinae'
- 'Eucalycoceras (Proeucalycoceras) is reassigned into Calycoceras'
- 'Eucalycoceras leonense is recombined as Paraconlinoceras leonense'
- 'Euhoplites belongs to Hoplitinae'
- 'Eulophoceras belongs to Lenticeratinae'
- 'Eulytoceras belongs to Lytoceratinae'
- 'Euomphaloceras belongs to Euomphaloceratinae'
- 'Euomphaloceratinae belongs to Acanthoceratidae'
- 'Euphylloceras is a subjective synonym of Hypophylloceras'
- 'Euthymiceras is a subjective synonym of Neocosmoceras'
- 'Falloticeras belongs to Mojsisovicziinae'
- 'Farnhamia belongs to Sonneratiinae'
- 'Fauriella is a subjective synonym of Subthurmannia'
- 'Ficheuria belongs to Flickiinae'
- 'Flickia belongs to Flickiinae'
- 'Flickiinae belongs to Flickiidae'
- 'Forbesiceras belongs to Forbesiceratidae'
- 'Fournierella was reranked as Pseudoschloenbachia (Fournierella) and belongs to Pseudoschloenbachia'
- 'Freboldiceras belongs to Cleoniceratidae'
- 'Frenguelliceras belongs to Neocomitinae'
- 'Gabbioceras belongs to Gabbioceratinae'
- 'Gabbioceratinae belongs to Tetragonitidae'
- 'Gastroplites belongs to Gastroplitinae'
- 'Gastroplitinae belongs to Hoplitidae'
- 'Gaudryceras belongs to Gaudryceratidae'
- 'Gaudryceras (Gaudryceras) belongs to Gaudryceras'
- 'Gaudryceratidae belongs to Tetragonitaceae'
- 'Gazdaganites is a subjective synonym of Metaclavites'
- 'Gentoniceras was reranked as Calycoceras (Gentoniceras) and belongs to Calycoceras'
- 'Georgioceras is a subjective synonym of Pseudothurmannia'
- 'Georgioceras kohllarseni is recombined as Pseudothurmannia kohllarseni'
- 'Gerhardtia is a subjective synonym of Heinzia'
- 'Germariceras belongs to Collignoniceratinae'
- 'Goodhallites belongs to Mortoniceratinae'
- 'Graysonites belongs to Mantelliceratinae'
- 'Graysonites lozoi belongs to Graysonites'
- 'Gyaloceras was reranked as Aconeceras (Gyaloceras) and belongs to Aconeceras'
- 'Gyaloceras smithi is recombined as Aconeceras (Gyaloceras) smithi'
- 'Gymnoplites belongs to Holcodiscidae'
- 'Hamites obstrictus is recombined as Polyptychoceras (Polyptychoceras) obstrictum'
- 'Hannaites belongs to Endemoceratinae'
- 'Hannaites belongs to Dictyochaceae'
- 'Haploceras belongs to Haploceratidae'
- 'Haplocerataceae belongs to Ammonitina'
- 'Haploceratidae belongs to Haplocerataceae'
- 'Haresiceras belongs to Scaphitinae'
- 'Hemilytoceras belongs to Lytoceratinae'
- 'Hemitetragonites is a subjective synonym of Protetragonites'
- 'Hemitissotia belongs to Pseudotissotiinae'
- 'Betiokytes is a subjective synonym of Neoptychites'
- 'Hengestites belongs to Placenticeratidae'
- 'Holcodiscoides belongs to Marshallitinae'
- 'Holcophylloceras belongs to Calliphylloceratinae'
- 'Holcostephanus is a subjective synonym of Olcostephanus'
- 'Hoplitaceaea is corrected as Hoplitaceae and belongs to Ammonitina'
- 'Hoplites belongs to Hoplitinae'
- 'Hourcqiinae belongs to Pseudotissotiidae'
- 'Hourcquia belongs to Hourcquiinae'
- 'Hulenites belongs to Marshallitinae'
- 'Hypengonoceras belongs to Engonoceratidae'
- 'Hyphoplites belongs to Hoplitinae'
- 'Hypophylloceras (Hypophylloceras) belongs to Hypophylloceras'
- 'Hypophylloceras (Hypophylloceras) belongs to Hypophylloceras' according to Salfeld 1924
- 'Hysteroceras belongs to Brancoceratinae'
- 'Indoceras belongs to Sphenodiscinae'
- 'Inflaticeras is a subjective synonym of Mortoniceras'
- 'Ingridella was reranked as Spathites (Ingridella) and belongs to Spathites'
- 'Ishikariceras belongs to Peroniceratinae'
- 'Jabronella is a subjective synonym of Subalpinites'
- 'Janenschites belongs to Bochianitinae'
- 'Jauberticeras belongs to Gabbioceratinae'
- 'Jeanrogericeras was reranked as Spathites (Jeanrogericeras) and belongs to Spathites'
- 'Jeanrogericeras sornayi is recombined as Thomelites sornayi'
- 'Jeanthieuloyites is a subjective synonym of Olcostephanus'
- 'Jimboiceras belongs to Puzosiinae'
- 'Jimenesites is a subjective synonym of Submortoniceras'
- 'Jouaniceras belongs to Nostoceratidae'
- 'Kachpurites was reranked as Craspedites (Kachpurites) and belongs to Craspedites'
- 'Kamerunoceras belongs to Euomphaloceratinae'
- 'Karamaiceras is a subjective synonym of Placenticeras'
- 'Kastanoceras belongs to Acanthoceratinae'
- 'Kastanoceras spiniger is corrected as Kastanoceras spinigerum and belongs to Kastanoceras'
- 'Kennediella belongs to Acanthoceratinae'
- 'Knemiceras belongs to Engonoceratidae'
- 'Knemiceras (Platiknemiceras) was reranked as Platiknemiceras and belongs to Engonoceratidae'
- 'Komeceras is a subjective synonym of Hysteroceras'
- 'Kondiloceras belongs to Barroisiceratinae'
- 'Kossmatella belongs to Gaudryceratinae'
- 'Kossmaticeras (Jacobites) belongs to Kossmaticeras' according to Kilian and Reboul 1909
- 'Kossmaticeras (Jacobites) was reranked as Jacobites and belongs to Kossmaticeratinae'
- 'Kotoceras is replaced by Damesites'
- 'Lecointriceras belongs to Collignoniceratinae'
- 'Leconteites belongs to Cleoniceratidae'
- 'Lemuroceras belongs to Cleoniceratidae'
- 'Lenticeras belongs to Lenticeratinae'
- 'Lenticeratidae was reranked as the subfamily Lenticeratinae and belongs to Sphenodiscidae'
- 'Leptotetragonites is a subjective synonym of Protetragonites'
- 'Libycoceras belongs to Sphenodiscinae'
- 'Limaites belongs to Neocomitinae'
- 'Lissonia belongs to Neocomitinae'
- 'Lithancylus belongs to Ancyloceratinae'
- 'Lobolytoceras is a subjective synonym of Lytoceras'
- 'Lopholobites belongs to Pulchelliidae'
- 'Lotzeites belongs to Euomphaloceratinae'
- 'Lymaniceras belongs to Collignoniceratinae'
- 'Lytoceras belongs to Lytoceratinae'
- 'Lytoceras (Argonauticeras) was reranked as Argonauticeras and belongs to Lytoceratinae'
- 'Lytoceras (Tetragonites) was reranked as Tetragonites and belongs to Tetragonitinae'
- 'Lytoceras argonautarum belongs to Lytoceras' according to Anderson 1902
- 'Lytoceras argonautarum is recombined as Argonauticeras argonautarum'
- 'Lytoceras triboleti belongs to Lytoceras' according to Uhlig 1902
- 'Lytoceras triboleti is recombined as Metalytoceras triboleti'
- 'Lytocerataceae belongs to Lytoceratina'
- 'Lytoceratidae belongs to Lytocerataceae'
- 'Lytoceratina belongs to Ammonoidea'
- 'Lytoceratinae belongs to Lytoceratidae'
- 'Lytocrioceras belongs to Helicancylinae'
- 'Lytodiscoides belongs to Puzosiinae'
- 'Maccarthyites belongs to Marshallitinae'
- 'Mammites belongs to Mammitinae'
- 'Mammitidae was reranked as the subfamily Mammitinae and belongs to Acanthoceratidae'
- 'Mancosiceras was reranked as Haresiceras (Mancosiceras) and belongs to Haresiceras'
- 'Mantelliceras belongs to Mantelliceratinae'
- 'Pseudomantelliceras is a subjective synonym of Eucalycoceras'
- 'Mantelliceras sellardsi is recombined as Tarrantoceras (Tarrantoceras) sellardsi'
- 'Mantelliceratinae belongs to Acanthoceratidae'
- 'Masiaposites belongs to Hourcquiinae'
- 'Mathoceras belongs to Mathoceratinae'
- 'Megatyloceras belongs to Roloboceratinae'
- 'Menabonites belongs to Pachydiscidae'
- 'Mesogaudryceras was reranked as Gaudryceras (Mesogaudryceras) and belongs to Gaudryceras'
- 'Metahamites belongs to Anisoceratidae'
- 'Metahoplites belongs to Holcodiscidae'
- 'Metalytoceras belongs to Lytoceratinae'
- 'Metasigaloceras belongs to Mammitinae'
- 'Metatissotia belongs to Tissotiidae'
- 'Metoicoceras belongs to Mammitinae'
- 'Metoicoceras wyomingensis is recombined as Dunveganoceras (Plesiacanthoceras) wyomingense'
- 'Microdesmoceras belongs to Desmoceratinae'
- 'Microdiphasoceras belongs to Vascoceratidae'
- 'Microsulcatoceras belongs to Acanthoceratinae'
- 'Mikasaites belongs to Marshallitinae'
- 'Mitonia belongs to Mammitinae'
- 'Miyakoceras belongs to Silesitidae'
- 'Moffitites belongs to Marshallitinae'
- 'Mojsisoviczia belongs to Mojsisovicziinae'
- 'Mojsisoviczia duerfeldi is a subjective synonym of Mojsisoviczia ventanillensis'
- 'Mojsisovicziinae belongs to Brancoceratidae'
- 'Moretella belongs to Cleoniceratidae'
- 'Morrowites belongs to Euomphaloceratinae'
- 'Mortoniceras (Cantabrigites) was reranked as Cantabrigites and belongs to Mortoniceratinae'
- 'Mrhiliceras is corrected as Mhriliceras and belongs to Mantelliceratinae'
- 'Muniericeras belongs to Muniericeratidae'
- 'Nannometoicoceras belongs to Mammitinae'
- 'Nebraskites belongs to Acanthoceratinae'
- 'Nebraskites haresiceratiforme belongs to Nebraskites'
- 'Neocardioceras belongs to Acanthoceratinae'
- 'Neocrioceras (Schlueterella) is reassigned into Pseudoxybeloceras'
- 'Neoepigoniceras is a nomen nudum'
- 'Neogastroplites belongs to Gastroplitinae'
- 'Neoharpoceras belongs to Mortoniceratinae'
- 'Neokanabiceras is a subjective synonym of Forresteria'
- 'Neokentroceras belongs to Brancoceratinae'
- 'Neolissoceras belongs to Haploceratidae'
- 'Neophlycticeras belongs to Stoliczkaiinae'
- 'Neophylloceras was reranked as Hypophylloceras (Neophylloceras) and belongs to Hypophylloceras'
- 'Neoselwynoceras is a subjective synonym of Texanites'
- 'Neosilesites belongs to Silesitidae'
- 'Neotollia is a subjective synonym of Tollia'
- 'Neoturrilites is a nomen nudum'
- 'Neposiella is a subjective synonym of Neosilesites'
- 'Newboldiceras (Mourreiceras) is a subjective synonym of Calycoceras (Newboldiceras)'
- 'Newboldiceras (Mourreiceras) mourrei is recombined as Calycoceras (Newboldiceras) mourrei'
- 'Newboldiceras (Newboldiceras) is an objective synonym of Calycoceras (Newboldiceras)'
- 'Niceforoceras belongs to Barroisiceratinae'
- 'Nigericeras belongs to Acanthoceratinae'
- 'Nodosohoplites is a subjective synonym of Diadochoceras'
- 'Nostoceratidae belongs to Turrilitaceae'
- 'Nubidites belongs to Sphenodiscinae'
- 'Odontodiscoceras belongs to Neocomitinae'
- 'Holcostephanus is a misspelling of Olcostephanus'
- 'Omocyrtoceras is a subjective synonym of Erioliceras'
- 'Oppeliidae belongs to Haplocerataceae'
- 'Otohoplites belongs to Sonneratiinae'
- 'Oxytropidoceras belongs to Mojsisovicziinae'
- 'Oxytropidoceras (Androiavites) is a subjective synonym of Oxytropidoceras (Adkinsites)'
- 'Pachydesmoceras belongs to Puzosiinae'
- 'Pachydiscoides belongs to Pachydiscidae'
- 'Pachygrycia belongs to Cleoniceratidae'
- 'Paraburroceras belongs to Euomphaloceratinae'
- 'Paracalycoceras belongs to Stoliczkaiinae'
- 'Paracompsoceras belongs to Acanthoceratinae'
- 'Paraconlinoceras belongs to Acanthoceratinae'
- 'Paradolphia belongs to Forbesiceratidae'
- 'Parahoplites aschiltaensis is recombined as Acanthohoplites aschiltaensis'
- 'Parajaubertella belongs to Tetragonitinae'
- 'Paralenticeras belongs to Lenticeratinae'
- 'Paramammites belongs to Euomphaloceratinae'
- 'Parapachydiscus peninsularis is recombined as Menuites peninsularis'
- 'Paraspiticeras belongs to Roloboceratinae'
- 'Parastieria belongs to Olcostephaninae'
- 'Paratexanites belongs to Texanitinae'
- 'Paratissotia belongs to Tissotiidae'
- 'Parengonoceras belongs to Engonoceratidae'
- 'Paroxytropidoceras is a nomen nudum'
- 'Partschiceras was reranked as Phylloceras (Partschiceras) and belongs to Phylloceras'
- 'Patagiosites belongs to Pachydiscidae'
- 'Perisphinctaceae belongs to Ammonitina'
- 'Mortoniceras (Pervinquieria) is an objective synonym of Mortoniceras (Mortoniceras)'
- 'Pervinquieria (Styphloceras) is a subjective synonym of Mortoniceras (Mortoniceras)'
- 'Petinoceras is a subjective synonym of Hysteroceras'
- 'Phylloceras belongs to Phylloceratinae'
- 'Phylloceras (Hypophylloceras) was reranked as Hypophylloceras and belongs to Phylloceratinae'
- 'Phylloceras (Phylloceras) belongs to Phylloceras'
- 'Phylloceras disputabile belongs to Phylloceras' according to Zittel 1869
- 'Phylloceras disputabile is recombined as Calliphylloceras disputabile'
- 'Phylloceras feddeni is recombined as Ptychophylloceras feddeni'
- 'Phylloceras mediterraneum belongs to Phylloceras' according to Neumayr 1871
- 'Phylloceras mediterraneum is recombined as Holcophylloceras mediterraneum'
- 'Phylloceras onoensis is recombined as Hypophylloceras onoense'
- 'Phyllocerataceae belongs to Phylloceratina'
- 'Phylloceratidae belongs to Phyllocerataceae'
- 'Phylloceratinae belongs to Phylloceratidae'
- 'Phylloceratitida was reranked as the suborder Phylloceratina and belongs to Ammonoidea'
- 'Phyllopachyceras belongs to Phylloceratinae'
- 'Pictetia belongs to Lytoceratinae'
- 'Placenticeras discoidale belongs to Placenticeras' according to Müller 1900
- 'Placenticeras discoidale is recombined as Bornhardticeras discoidale'
- 'Platylenticeratinae belongs to Polyptychitidae'
- 'Plesiacanthoceras was reranked as Dunveganoceras (Plesiacanthoceras) and belongs to Dunveganoceras'
- 'Plesiacanthoceratoides belongs to Acanthoceratinae'
- 'Plesiohamites belongs to Turrilitaceae'
- 'Plesiospitidiscus belongs to Barremitinae'
- 'Pleurohoplites belongs to Anahoplitinae'
- 'Pleurotexanites belongs to Texanitinae'
- 'Polyptychitidae belongs to Perisphinctaceae'
- 'Polyptychitinae belongs to Polyptychitidae'
- 'Praemanambolites was reranked as Manambolites (Praemanambolites) and belongs to Manambolites'
- 'Praetollia belongs to Craspeditinae'
- 'Prionocycloceras belongs to Collignoniceratinae'
- 'Procliviceras is a subjective synonym of Partschiceras'
- 'Prohauericeras belongs to Acanthoceratinae'
- 'Prohelicoceras belongs to Anisoceratidae'
- 'Prohysteroceras belongs to Mortoniceratinae'
- 'Prolyelliceras belongs to Lyelliceratinae'
- 'Protacanthoceras belongs to Acanthoceratinae'
- 'Protacanthoceras vetula is recombined as Plesiacanthoceratoides vetula'
- 'Protacanthodiscus belongs to Berriasellinae'
- 'Protacanthoplites is a subjective synonym of Acanthohoplites'
- 'Protetragonites belongs to Lytoceratinae'
- 'Protexanites belongs to Texanitinae'
- 'Protohoplites belongs to Sonneratiinae'
- 'Protokossmaticeras belongs to Marshallitinae'
- 'Protothurmannia belongs to Neocomitinae'
- 'Proturrilitoides belongs to Turrilitidae'
- 'Pseudacompsoceras is a subjective synonym of Acompsoceras'
- 'Pseudacompsoceras vectense is recombined as Acanthoceras vectense'
- 'Pseudacompsoceras vectense belongs to Pseudacompsoceras' according to Spath 1925
- 'Pseudaspidoceras belongs to Euomphaloceratinae'
- 'Pseudobarroisiceras belongs to Barroisiceratinae'
- 'Pseudocalycoceras belongs to Acanthoceratinae'
- 'Pseudofavrella belongs to Endemoceratinae'
- 'Pseudohaploceras belongs to Puzosiinae'
- 'Pseudojacobites belongs to Pachydiscidae'
- 'Pseudophyllites belongs to Tetragonitidae'
- 'Pseudoplacenticeras is a subjective synonym of Placenticeras'
- 'Pseudosaynella belongs to Pseudosaynellinae'
- 'Pseudosaynellinae belongs to Desmoceratidae'
- 'Pseudosilesites belongs to Silesitoidinae'
- 'Pseudosonneratia belongs to Sonneratiinae'
- 'Pseudotissotia coahuilaensis is recombined as Spathites (Spathites) coahuilaensis'
- 'Pseudotissotia inopinata belongs to Pseudotissotia' according to Kennedy and Bayliss 1979
- 'Pseudotissotia inopinata is recombined as Paracompsoceras inopinata' according to Cooper 1979
- 'Pseudotissotia inopinata is recombined as Kennediella inopinata' according to Cooper 1979
- 'Psilohamites was reranked as Hamites (Psilohamites) and belongs to Hamites'
- 'Psilopulchellia belongs to Pulchelliidae'
- 'Psilotissotia belongs to Pulchelliidae'
- 'Pterolytoceras belongs to Lytoceratinae'
- 'Pteroscaphites belongs to Scaphitinae'
- 'Ptychophylloceras belongs to Calliphylloceratinae'
- 'Pulchelliaceae belongs to Ammonitina'
- 'Pulchelliidae belongs to Pulchelliaceae'
- 'Quitmaniceras belongs to Acanthoceratinae'
- 'Quitmaniceras reaseri belongs to Quitmaniceras'
- 'Raimondiceras belongs to Neocomitinae'
- 'Rhamphidoceras belongs to Mammitinae'
- 'Riasanites belongs to Berriasellinae'
- 'Roemeroceras is a subjective synonym of Buchiceras'
- 'Roemeroceras gabbi is recombined as Buchiceras gabbi'
- 'Roloboceratinae belongs to Douvilleiceratidae'
- 'Romaniceras belongs to Euomphaloceratinae'
- 'Romaniceras (Neomphaloceras) belongs to Romaniceras' according to Matsumoto and Obata 1982
- 'Romaniceras (Romaniceras) belongs to Romaniceras'
- 'Rossalites belongs to Anisoceratidae'
- 'Rubroceras belongs to Vascoceratidae'
- 'Saghalinites belongs to Tetragonitidae'
- 'Salfeldiella is a subjective synonym of Holcophylloceras'
- 'Saltericeras is a subjective synonym of Schloenbachia'
- 'Saynoceras gazellae is recombined as Neosaynoceras gazellae'
- 'Scaphamites belongs to Hamitidae'
- 'Scaphitaceae belongs to Ancyloceratina'
- 'Scaphites was reranked as Ammonites (Scaphites) and belongs to Ammonites' according to Meek 1857
- 'Semenoviceras belongs to Hoplitinae'
- 'Sharpeiceras belongs to Mantelliceratinae'
- 'Shuparoceras was reranked as Romaniceras (Shuparoceras) and belongs to Romaniceras'
- 'Silesitoides belongs to Silesitoidinae'
- 'Silesitoidinae belongs to Desmoceratidae'
- 'Simbirskitidae was reranked as the subfamily Simbirskitinae and belongs to Polyptychitidae'
- 'Sokolovites belongs to Gastroplitinae'
- 'Somaliceras is a subjective synonym of Spiticeras'
- 'Somalites belongs to Mathoceratinae'
- 'Sonneratia belongs to Sonneratiinae'
- 'Sonneratiinae belongs to Hoplitidae'
- 'Sornayceras is a subjective synonym of Zuluiceras'
- 'Sowerbyceras belongs to Calliphylloceratinae'
- 'Spathiceras is a subjective synonym of Hysteroceras'
- 'Spathites belongs to Mammitinae'
- 'Spathites (Spathites) belongs to Spathites'
- 'Speetoniceras was reranked as Simbirskites (Speetoniceras) and belongs to Simbirskites'
- 'Sphenodiscinae belongs to Sphenodiscidae'
- 'Spitidiscus belongs to Barremitinae'
- 'Streblites kraffti belongs to Streblites' according to Uhlig 1903
- 'Streblites kraffti is recombined as Uhligites kraffti'
- 'Streblitinae belongs to Oppeliidae'
- 'Subalpinites belongs to Neocomitinae'
- 'Subbarroisiceras is a subjective synonym of Barroisiceras'
- 'Suboosterella belongs to Endemoceratinae'
- 'Subprionocyclus belongs to Collignoniceratinae'
- 'Subptychoceras was reranked as Polyptychoceras (Subptychoceras) and belongs to Polyptychoceras'
- 'Subpulchellia belongs to Pulchelliidae'
- 'Subsaynella belongs to Barremitinae'
- 'Substreblites belongs to Streblitinae'
- 'Subthurmannia belongs to Neocomitinae'
- 'Sumitomoceras was reranked as Tarrantoceras (Sumitomoceras) and belongs to Tarrantoceras'
- 'Sumitomoceras faustum belongs to Sumitomoceras' according to Matsumoto 1969
- 'Surites belongs to Tolliinae'
- 'Takahashia belongs to Tetragonitinae'
- 'Tarrantoceras belongs to Acanthoceratinae'
- 'Tarrantoceras (Tarrantoceras) belongs to Tarrantoceras'
- 'Terascosceras is a subjective synonym of Hysteroceras'
- 'Teshioites belongs to Pachydiscidae'
- 'Tetragonitaceae belongs to Lytoceratina'
- 'Tetragonites (Carinites) belongs to Tetragonites'
- 'Tetragonites (Tetragonites) belongs to Tetragonites'
- 'Tetragonites spathi is recombined as Tetragonites (Carinites) spathi'
- 'Tetragonitidae belongs to Tetragonitaceae'
- 'Tetragonitinae belongs to Tetragonitidae'
- 'Tetragonoceras is a subjective synonym of Erioliceras'
- 'Tetrahoplites belongs to Sonneratiinae'
- 'Tetrahoplitoides belongs to Cleoniceratidae'
- 'Thomelites belongs to Acanthoceratinae'
- 'Tissotioides belongs to Tissotiidae'
- 'Tlahualiloceras is a subjective synonym of Sharpeiceras'
- 'Tlahualiloceras tlahualiloensis is recombined as Sharpeiceras tlahualiloensis'
- 'Tolliinae belongs to Polyptychitidae'
- 'Tolypeceras was reranked as Platylenticeras (Tolypeceras) and belongs to Platylenticeras'
- 'Tongoboryceras belongs to Pachydiscidae'
- 'Tonoceras was reranked as Ancyloceras (Tonoceras) and belongs to Ancyloceras'
- 'Torcapella belongs to Barremitinae'
- 'Toxoceras is a subjective synonym of Crioceratites'
- 'Trachylytoceras is a subjective synonym of Lytoceras'
- 'Tragodesmoceroides belongs to Desmoceratinae'
- 'Trochleiceras belongs to Trochleiceratidae'
- 'Tropitoides belongs to Haplocerataceae'
- 'Tuberodiscoides belongs to Pachydiscidae'
- 'Tunesites is a nomen dubium'
- 'Turrilitaceae belongs to Ancyloceratina'
- 'Turrilites (Carthaginites) was reranked as Carthaginites and belongs to Turrilitidae'
- 'Turrilitoides belongs to Turrilitaceae'
- 'Uhligella belongs to Beudanticeratinae'
- 'Uhligia belongs to Heteroceratidae'
- 'Uhligites belongs to Streblitinae'
- 'Umiaites is corrected as Umaites and belongs to Spiticeratinae'
- 'Urakawites belongs to Pachydiscidae'
- 'Utaturiceras belongs to Mantelliceratinae'
- 'Vascoceras belongs to Vascoceratidae'
- 'Vascoceras polymorphum is recombined as Paramammites polymorphum'
- 'Vertebrites belongs to Gaudryceratidae'
- 'Watinoceras belongs to Acanthoceratinae'
- 'Watinoceras reesidei is a subjective synonym of Watinoceras amudariense'
- 'Weavericeras is a subjective synonym of Valdedorsella'
- 'Wellmanites belongs to Marshallitinae'
- 'Wellsia is a subjective synonym of Homolsomites'
- 'Yakushiceras belongs to Marshallitinae'
- 'Yeharites belongs to Marshallitinae'
- 'Yubariceras was reranked as Romaniceras (Yubariceras) and belongs to Romaniceras'
- 'Yubariceras pseudomphalum belongs to Yubariceras' according to Matsumoto 1975
- 'Yubariceras pseudomphalum is recombined as Romaniceras (Neomphaloceras) pseudomphalum'
- 'Zelandites belongs to Gaudryceratidae'
- 'Zetoceras was reranked as Phylloceras (Zetoceras) and belongs to Phylloceras'
- 'Zuercherella belongs to Beudanticeratinae'