Opinions from L. F. Spath 1951
- 'Alloclionites belongs to Clionitidae'
- 'Alloptychites belongs to Ptychitidae'
- 'Amaltheus sansovinii is recombined as Sturia sansovinii'
- 'Amarassites belongs to Haloritidae'
- 'Amarassites ingrediens belongs to Amarassites' according to Welter 1914
- 'Amarassites ingrediens belongs to Amarassites'
- 'Ammonites (Ceratites) achelous is recombined as Klipsteinia achelous'
- 'Ammonites (Ceratites) aon is recombined as Trachyceras aon'
- 'Ammonites (Ceratites) glaucus is recombined as Lecanites glaucus'
- 'Ammonites acutinodis belongs to Ammonites' according to Hauer 1860
- 'Ammonites acutinodis is recombined as Haidingerites acutinodis'
- 'Ammonites armatocingulatus is a subjective synonym of Trachyceras aon'
- 'Ammonites arpadis is recombined as Arpadites arpadis'
- 'Ammonites arpadis belongs to Ammonites' according to Mojsisovics 1870
- 'Ammonites bicrenatus is recombined as Cyrtopleurites bicrenatus'
- 'Ammonites coangustatus is recombined as Sphingites coangustatus'
- 'Ammonites crassitesta belongs to Ammonites' according to Dittmar 1866
- 'Ammonites crassitesta is recombined as Eremites crassitesta'
- 'Ammonites credneri is a subjective synonym of Trachyceras aon'
- 'Ammonites dechenii is a subjective synonym of Trachyceras aon'
- 'Ammonites decrescens belongs to Ammonites' according to Hauer 1855
- 'Ammonites decrescens is recombined as Episculites decrescens'
- 'Ammonites ehrlichi belongs to Ammonites' according to Hauer 1855
- 'Ammonites ehrlichi is recombined as Juvavites ehrlichi'
- 'Ammonites erinaceus is recombined as Trachysagenites erinaceus'
- 'Ammonites eryx is recombined as Badiotites eryx'
- 'Ammonites eusomus belongs to Ammonites' according to Beyrich 1865
- 'Ammonites eusomus is recombined as Ptychites eusomus'
- 'Ammonites floridus belongs to Ammonites' according to Salter 1865
- 'Ammonites floridus is replaced by Rimkinites edmondii' according to Diener 1908
- 'Ammonites foliaceus is recombined as Metatirolites foliaceus'
- 'Ammonites galeiformis is recombined as Arcestes galeiformis'
- 'Ammonites geniculatus belongs to Ammonites' according to Hauer 1855
- 'Ammonites geniculatus is recombined as Helictites geniculatus'
- 'Ammonites hoernesi belongs to Ammonites' according to Hauer 1849
- 'Ammonites hoernesi is recombined as Steinmannites hoernesi'
- 'Ammonites incultus is recombined as Gymnites incultus'
- 'Ammonites jokelyi is recombined as Hoplotropites jokelyi'
- 'Ammonites lamarki is recombined as Anagymnites lamarcki'
- 'Ammonites larva is a subjective synonym of Trachyceras aon'
- 'Ammonites layeri is recombined as Pompeckjites layeri'
- 'Ammonites malletianus belongs to Ammonites' according to Stoliczka 1865
- 'Ammonites malletianus is recombined as Malletoptychites malletianus'
- 'Ammonites medleyanus belongs to Ammonites' according to Stoliczka 1865
- 'Ammonites medleyanus is recombined as Griesbachites medleyanus'
- 'Ammonites metternichi is recombined as Pinacoceras metternichi'
- 'Ammonites mirabilis is a subjective synonym of Trachyceras aon'
- 'Ammonites multilobatus is recombined as Paracladiscites multilobatus'
- 'Ammonites nasturtium belongs to Ammonites' according to Dittmar 1866
- 'Ammonites nasturtium is recombined as Hannaoceras nasturtium'
- 'Ammonites nodulosocostatus is a subjective synonym of Trachyceras aon'
- 'Ammonites oribasus is recombined as Sandlingites oribasus'
- 'Ammonites pseudoaries is recombined as Ectolcites pseudoaries' according to Mojsisovics 1893
- 'Ammonites pseudoaries is recombined as Ectolcites pseudoaries'
- 'Ammonites ramsaueri is recombined as Halorites ramsaueri'
- 'Ammonites rarestriatus belongs to Ammonites' according to Hauer 1849
- 'Ammonites rarestriatus is recombined as Hauerites rarestriatus'
- 'Ammonites rectangularis belongs to Ammonites' according to Hauer 1860
- 'Ammonites rectangularis is recombined as Coeloceltites rectangularis'
- 'Ammonites reticulatus is recombined as Sagenites reticulatus'
- 'Ammonites reticulatus belongs to Ammonites' according to Hauer 1850
- 'Ammonites robustus belongs to Ammonites' according to Hauer 1855
- 'Ammonites robustus is recombined as Heraclites robustus'
- 'Ammonites sandlingensis is recombined as Discotropites sandlingensis'
- 'Ammonites scaphitiformis belongs to Ammonites' according to Hauer 1855
- 'Ammonites scaphitiformis is recombined as Parathisbites scaphitiformis'
- 'Ammonites semiglobosus is recombined as Homerites semiglobosus'
- 'Ammonites senticosus is recombined as Sirenites senticosus'
- 'Ammonites spinescens belongs to Ammonites' according to Hauer 1855
- 'Ammonites spinescens is recombined as Metasibirites spinescens'
- 'Ammonites spinulocostatus is a subjective synonym of Trachyceras aon'
- 'Ammonites strombecki is recombined as Noetlingites strombecki'
- 'Ammonites subbullatus is recombined as Tropites subbullatus'
- 'Ammonites subumbilicatus is recombined as Stenarcestes subumbilicatus'
- 'Ammonites tornatus is recombined as Cladiscites tornatus'
- 'Ammonites turbina belongs to Ammonites' according to Dittmar 1866
- 'Ammonites turbina is recombined as Barrandeites turbina'
- 'Ammonites velthemii is a subjective synonym of Trachyceras aon'
- 'Anagymnites belongs to Gymnitidae'
- 'Anasirenites belongs to Trachyceratidae'
- 'Anasirenites ekkehardi belongs to Anasirenites'
- 'Anatibetites belongs to Tibetitidae'
- 'Anatibetites kelvini belongs to Anatibetites' according to Mojsisovics 1896
- 'Anatibetites kelvini belongs to Anatibetites'
- 'Anatomites belongs to Haloritidae'
- 'Anatropites margaritiformis is recombined as Margaritropites margaritiformis'
- 'Anisarcestes belongs to Arcestidae'
- 'Anolcites belongs to Trachyceratidae'
- 'Apleuroceras belongs to Aplococeratidae'
- 'Aplococeras belongs to Aplococeratidae'
- 'Arcestes belongs to Arcestidae'
- 'Arcestes (Pararcestes) subdimidiatus belongs to Arcestes (Pararcestes)' according to Kittl 1908
- 'Arcestes (Pararcestes) subdimidiatus is recombined as Anisarcestes subdimidiatus'
- 'Arcestes bramantei is recombined as Proarcestes bramantei'
- 'Arcestes piae belongs to Arcestes' according to Diener 1919
- 'Arcestes piae is recombined as Gonarcestes piae'
- 'Arcestes rhaeticus is recombined as Rhaetites rhaeticus'
- 'Arcestes selwyni is recombined as Nitanoceras selwyni'
- 'Arcestes sublabiatus is recombined as Pararcestes sublabiatus'
- 'Arietoceltites belongs to Tropiceltitidae'
- 'Aristoptychites belongs to Ptychitidae'
- 'Arnioceltites was reranked as Tropiceltites (Arnioceltites) and belongs to Tropiceltites' according to Mojsisovics 1893
- 'Arnioceltites belongs to Tropiceltitidae'
- 'Arpadites belongs to Arpaditidae'
- 'Arpadites (Trachypleuraspidites) was reranked as Trachypleuraspidites and belongs to Arpaditidae'
- 'Arpadites (Trachypleuraspidites) griffithi is recombined as Trachypleuraspidites griffithi'
- 'Arpadites caesar belongs to Arpadites' according to Mojsisovics 1893
- 'Arpadites caesar is recombined as Dionites caesar'
- 'Arpadites ectodus belongs to Arpadites' according to Mojsisovics 1893
- 'Arpadites ectodus is recombined as Muensterites ectodus'
- 'Arpadites orientalis is recombined as Trachyceras orientale' according to Mojsisovics 1882
- 'Arpadites orientalis is recombined as Eremites orientalis'
- 'Arpadites rimkinensis belongs to Arpadites' according to Mojsisovics 1896
- 'Arpadites rimkinensis is recombined as Edmundites rimkinensis'
- 'Arpadites segmentatus belongs to Arpadites' according to Mojsisovics 1893
- 'Arpadites segmentatus is recombined as Asklepioceras segmentatum'
- 'Asklepioceras belongs to Arpaditidae'
- 'Badiotites belongs to Lecanitidae'
- 'Balatonites belongs to Balatonitidae'
- 'Balatonites arietiformis belongs to Balatonites' according to Mojsisovics 1882
- 'Balatonites arietiformis is recombined as Judicarites arietiformis'
- 'Bambanagites belongs to Pinacoceratidae'
- 'Bambanagites schlagintweiti belongs to Bambanagites'
- 'Bambanagites schlagintweiti belongs to Bambanagites' according to Mojsisovics 1896
- 'Barrandeites belongs to Haloritidae'
- 'Bellerophon nautilinus is recombined as Paralobites nautilinus'
- 'Brouwerites belongs to Clionitidae'
- 'Buchites belongs to Buchitidae'
- 'Buchites aldrovandii belongs to Buchites' according to Mojsisovics 1893
- 'Buchites aldrovandii belongs to Buchites'
- 'Buchitidae belongs to Trachycerataceae'
- 'Buddhaites belongs to Gymnitidae'
- 'Buddhaites rama belongs to Buddhaites' according to Diener 1895
- 'Buddhaites rama belongs to Buddhaites'
- 'Bukowskiites colvini belongs to Bukowskiites'
- 'Californites belongs to Clionitidae'
- 'Carnites belongs to Carnitidae'
- 'Celtites belongs to Celtitidae'
- 'Celtites floriani is recombined as Danubites floriani'
- 'Celtites perauritus belongs to Celtites' according to Diener 1908
- 'Celtites perauritus is recombined as Otoceltites perauritus'
- 'Celtites trigonalis belongs to Celtites' according to Diener 1908
- 'Celtites trigonalis is recombined as Indoceltites trigonalis'
- 'Ceratites (Halilucites) was reranked as Halilucites and belongs to Ceratitidae'
- 'Ceratites (Hungarites) arietitiformis belongs to Ceratites (Hungarites)' according to Hauer 1896
- 'Ceratites (Hungarites) arietitiformis is recombined as Halilucites arietitiformis'
- 'Ceratites (Hungarites) boeckhi belongs to Ceratites (Hungarites)' according to Hauer 1896
- 'Ceratites (Hungarites) boeckhi is replaced by Halilucites discus'
- 'Ceratites (Hungarites) rusticus belongs to Ceratites (Hungarites)' according to Hauer 1896
- 'Ceratites (Hungarites) rusticus is recombined as Halilucites rusticus'
- 'Ceratites brevicostatus is a subjective synonym of Trachyceras aon'
- 'Ceratites euryomphalus belongs to Ceratites' according to Benecke 1866
- 'Ceratites euryomphalus is recombined as Judicarites euryomphalus'
- 'Ceratites meriani is a subjective synonym of Trachyceras aon'
- 'Ceratites mojsisovicsi is a nomen nudum' according to Roth 1871
- 'Ceratites mojsisovicsi is recombined as Hungarites mojsisovicsi'
- 'Ceratites planiplicatus is recombined as Japonites planiplicatus'
- 'Ceratites pradoi is recombined as Iberites pradoi'
- 'Ceratites viator belongs to Ceratites' according to Mojsisovics 1893
- 'Ceratites viator is recombined as Noridiscites viator'
- 'Ceratites zeuschneri is a subjective synonym of Trachyceras aon'
- 'Choristoceras belongs to Choristoceratidae'
- 'Choristoceras (Peripleurites) roemeri is recombined as Peripleurites roemeri'
- 'Choristoceras marshi belongs to Choristoceras'
- 'Cladiscites belongs to Cladiscitidae'
- 'Cladiscites subtornatus is recombined as Hypocladiscites subtornatus'
- 'Clionites belongs to Clionitidae'
- 'Clionites (Arpadites) ares is recombined as Clionites ares' according to Welter 1914
- 'Clionites (Neanites) is reassigned into Traskites'
- 'Clionites (Shastites) is reassigned into Traskites'
- 'Clionites (Stantonites) is reassigned into Traskites'
- 'Clionites angulosus belongs to Clionites' according to Mojsisovics 1893
- 'Clionites angulosus belongs to Clionites'
- 'Clionites ares timorensis belongs to Clionites ares' according to Welter 1914
- 'Clionites ares timorensis is recombined as Alloclionites timorensis'
- 'Clionites gracilis belongs to Clionites' according to Diener 1906
- 'Clionites gracilis is recombined as Indoclionites gracilis'
- 'Clionites involutus belongs to Clionites' according to Welter 1914
- 'Clionites involutus is recombined as Brouwerites involutus'
- 'Clydonites belongs to Clydonitidae'
- 'Clydonites costatus belongs to Clydonites' according to Hauer 1866
- 'Clydonites costatus is recombined as Tropiceltites costatus'
- 'Clydonites ellipticus is recombined as Lobites ellipticus'
- 'Clydonites hauerinus belongs to Clydonites' according to Stoliczka 1865
- 'Clydonites hauerinus is recombined as Isculites hauerinus'
- 'Clydonites monilis is recombined as Coroceras monilis'
- 'Clydonites oldhamianus belongs to Clydonites' according to Stoliczka 1865
- 'Clydonites oldhamianus is recombined as Indolobites oldhamianus'
- 'Cochloceras belongs to Cochloceratidae'
- 'Cochloceras canaliculatum is recombined as Paracochloceras canaliculatum'
- 'Cochloceras fischeri belongs to Cochloceras' according to Hauer 1860
- 'Cochloceras fischeri belongs to Cochloceras'
- 'Coeloceltites belongs to Celtitidae'
- 'Coroceras belongs to Lobitidae'
- 'Cuccoceras belongs to Balatonitidae'
- 'Cycloceltites belongs to Celtitidae'
- 'Cyrtopleurites belongs to Cyrtopleuritidae'
- 'Cyrtopleurites (Acanthinites) was reranked as Acanthinites and belongs to Cyrtopleuritidae'
- 'Cyrtopleurites (Acanthinites) excelsior belongs to Cyrtopleurites (Acanthinites)' according to Mojsisovics 1893
- 'Cyrtopleurites (Acanthinites) excelsior is recombined as Acanthinites excelsior'
- 'Dalmatites parvus is recombined as Neodalmatites parvus'
- 'Danubites belongs to Danubitidae'
- 'Danubites dritarashtra belongs to Danubites' according to Diener 1895
- 'Danubites dritarashtra is recombined as Pseudodanubites dritarashtra'
- 'Daphnites belongs to Arpaditidae'
- 'Daphnites (Silenticeras) hatae is recombined as Silenticeras hatae'
- 'Daphnites berchtae belongs to Daphnites' according to Mojsisovics 1893
- 'Daphnites berchtae belongs to Daphnites'
- 'Dawsonites belongs to Trachyceratidae'
- 'Didymites belongs to Didymitidae'
- 'Didymites malayanus belongs to Didymites' according to Welter 1914
- 'Didymites malayanus is recombined as Timorodidymites malayanus'
- 'Dieneria belongs to Carnitidae'
- 'Dieneria arthaberi belongs to Dieneria'
- 'Dimorphites belongs to Haloritidae'
- 'Dimorphotoceras belongs to Tibetitidae'
- 'Dinarites desertorum is recombined as Metadinarites desertorus'
- 'Dionites belongs to Arpaditidae'
- 'Diplosirenites belongs to Trachyceratidae'
- 'Diplosirenites raineri belongs to Diplosirenites' according to Mojsisovics 1893
- 'Diplosirenites raineri belongs to Diplosirenites'
- 'Discoptychites belongs to Ptychitidae'
- 'Discotropites belongs to Tropitidae'
- 'Distichites belongs to Distichitidae'
- 'Distichites megacanthus belongs to Distichites' according to Mojsisovics 1893
- 'Distichites megacanthus belongs to Distichites'
- 'Dittmarites belongs to Arpaditidae'
- 'Dobrogeites belongs to Aplococeratidae'
- 'Dobrogeites tirolitiformis belongs to Dobrogeites' according to Kittl 1908
- 'Dobrogeites tirolitiformis belongs to Dobrogeites'
- 'Drepanites belongs to Arpaditidae'
- 'Drepanites hyatti belongs to Drepanites' according to Mojsisovics 1893
- 'Drepanites hyatti belongs to Drepanites'
- 'Drepanites schucherti belongs to Drepanites' according to Diener 1906
- 'Drepanites schucherti is recombined as Xenodrepanites schucherti'
- 'Ectolcites belongs to Distichitidae'
- 'Edmundites belongs to Arpaditidae'
- 'Eogymnites belongs to Gymnitidae'
- 'Eogymnites decipiens belongs to Eogymnites'
- 'Epiceratites belongs to Buchitidae'
- 'Epigymnites belongs to Gymnitidae'
- 'Episculites belongs to Episculitinae'
- 'Episculitinae belongs to Haloritidae'
- 'Eremites belongs to Buchitidae'
- 'Eudiscoceras belongs to Ceratitidae'
- 'Eudiscoceras gabbi belongs to Eudiscoceras'
- 'Euisculites belongs to Episculitinae'
- 'Eupinacoceras belongs to Pinacoceratidae'
- 'Eutomoceras belongs to Ceratitidae'
- 'Eutomoceras laubei belongs to Eutomoceras'
- 'Flexoptychites belongs to Ptychitidae'
- 'Galeites belongs to Arcestidae'
- 'Girthiceras belongs to Haloritidae'
- 'Girthiceras pernodosum belongs to Girthiceras' according to Diener 1909
- 'Girthiceras pernodosum belongs to Girthiceras'
- 'Glamocites belongs to Clionitidae'
- 'Glamocites katzeri belongs to Glamocites' according to Diener 1917
- 'Glamocites katzeri belongs to Glamocites'
- 'Glyphidites belongs to Thisbitidae'
- 'Glyphidites docens belongs to Glyphidites' according to Mojsisovics 1893
- 'Glyphidites docens belongs to Glyphidites'
- 'Gonarcestes belongs to Arcestidae'
- 'Goniatites bronnii is recombined as Lecanites bronnii'
- 'Goniatites buchii is recombined as Orthoceltites buchii'
- 'Goniatites decoratus belongs to Goniatites' according to Hauer 1846
- 'Goniatites decoratus is recombined as Clydonites decoratus'
- 'Goniatites ornatus is a subjective synonym of Trachyceras aon'
- 'Goniatites pisum is recombined as Paralobites pisus'
- 'Goniatites spurius is recombined as Nannites spurius'
- 'Gonionotites belongs to Haloritidae'
- 'Gonionotites italicus belongs to Gonionotites' according to Gemmellaro 1904
- 'Gonionotites italicus belongs to Gonionotites'
- 'Griesbachites belongs to Haloritidae'
- 'Guembelites belongs to Haloritidae'
- 'Gymnites belongs to Gymnitidae'
- 'Gymnites ecki is recombined as Epigymnites ecki'
- 'Gymnites spiniger belongs to Gymnites' according to Diener 1917
- 'Gymnites spiniger is recombined as Xiphogymnites spiniger'
- 'Gymnotropites belongs to Tropitidae'
- 'Haidingerites belongs to Tropiceltitidae'
- 'Halilucites discus belongs to Halilucites'
- 'Halorites belongs to Haloritidae'
- 'Hannaoceras belongs to Choristoceratidae'
- 'Hauerites belongs to Cyrtopleuritidae'
- 'Heinrichites belongs to Haloritidae'
- 'Heinrichites paulckei belongs to Heinrichites' according to Diener 1921
- 'Heinrichites paulckei belongs to Heinrichites'
- 'Helictites belongs to Buchitidae'
- 'Heraclites belongs to Heraclitidae'
- 'Heraclites (Guembelites) jandianus is recombined as Guembelites jandianus'
- 'Himavatites belongs to Cyrtopleuritidae'
- 'Himavatites watsoni belongs to Himavatites' according to Diener 1906
- 'Himavatites watsoni belongs to Himavatites'
- 'Homerites belongs to Haloritidae'
- 'Hoplotropites belongs to Tropitidae'
- 'Hungarites belongs to Hungaritidae'
- 'Hungarites was reranked as Ceratites (Hungarites) and belongs to Ceratites' according to Hauer 1896
- 'Hungarites nitiensis is recombined as Rimkinites nitiensis' according to Mojsisovics 1902
- 'Hungarites nitiensis is recombined as Rimkinites nitiensis'
- 'Hyattites belongs to Ptychitidae'
- 'Hyparpadites belongs to Arpaditidae'
- 'Hypisculites belongs to Episculitinae'
- 'Hypocladiscites belongs to Cladiscitidae'
- 'Iberites belongs to Hungaritidae'
- 'Indoceltites belongs to Celtitidae'
- 'Indoclionites belongs to Clionitidae'
- 'Indolobites belongs to Lobitidae'
- 'Indonesites belongs to Haloritidae'
- 'Indonesites dieneri belongs to Indonesites' according to Welter 1914
- 'Indonesites dieneri belongs to Indonesites'
- 'Isculites belongs to Isculitidae'
- 'Isculites bittneri belongs to Isculites' according to Gemmellaro 1904
- 'Isculites bittneri is recombined as Euisculites bittneri'
- 'Isculites dieneri belongs to Isculites' according to Pakuckas 1928
- 'Isculites dieneri is recombined as Hypisculites dieneri'
- 'Ismidites belongs to Ptychitidae'
- 'Ismidites marmarensis belongs to Ismidites'
- 'Istreites belongs to Joannitidae'
- 'Istreites ptychitiformis belongs to Istreites' according to Simionescu 1913
- 'Istreites ptychitiformis belongs to Istreites'
- 'Japonites belongs to Gymnitidae'
- 'Jellinekites belongs to Thisbitidae'
- 'Jellinekites barnardi belongs to Jellinekites' according to Diener 1906
- 'Jellinekites barnardi belongs to Jellinekites'
- 'Joannites belongs to Joannitidae'
- 'Jovites belongs to Haloritidae'
- 'Jovites (Bacchites) was reranked as Bacchites and belongs to Haloritidae'
- 'Judicarites belongs to Danubitidae'
- 'Juvavites belongs to Haloritidae'
- 'Juvavites (Anatomites) bacchus is recombined as Juvavites bacchus' according to Mojsisovics 1893
- 'Juvavites (Anatomites) bacchus is recombined as Bacchites bacchus'
- 'Juvavites (Anatomites) rotundus belongs to Juvavites (Anatomites)' according to Mojsisovics 1893
- 'Juvavites (Anatomites) rotundus is recombined as Anatomites rotundus'
- 'Juvavites (Dimorphites) selectus is recombined as Dimorphites selectus'
- 'Juvavites angulatus is recombined as Indojuvavites angulatus'
- 'Klamathites belongs to Carnitidae'
- 'Klamathites schucherti belongs to Klamathites'
- 'Klipsteinia belongs to Arpaditidae'
- 'Koptoceras belongs to Ceratitidae'
- 'Koptoceras falconi belongs to Koptoceras'
- 'Koptoceras undulatum belongs to Koptoceras'
- 'Lecanites belongs to Lecanitidae'
- 'Lecanites vogdesi is recombined as Pseudaplococeras vogdesi'
- 'Leconteia californica is recombined as Leconteiceras californicum'
- 'Leconteiceras belongs to Haloritidae'
- 'Lobites belongs to Lobitidae'
- 'Lobites (Paralobites) was reranked as Paralobites and belongs to Lobitidae'
- 'Lobites (Psilolobites) argolicus is recombined as Psilolobites argolicus'
- 'Lobites (Psilolobites) argolicus belongs to Lobites (Psilolobites)' according to Renz 1911
- 'Longobardites belongs to Longobarditinae'
- 'Malayites belongs to Haloritidae'
- 'Malayites informis belongs to Malayites' according to Welter 1914
- 'Malayites informis belongs to Malayites'
- 'Malletoptychites belongs to Ptychitidae'
- 'Margarites is replaced by Hoplotropites'
- 'Margaritropites belongs to Tropitidae'
- 'Martolites belongs to Buchitidae'
- 'Martolites kraffti belongs to Martolites' according to Diener 1906
- 'Martolites kraffti belongs to Martolites'
- 'Meekoceras emmrichi is recombined as Parasturia emmrichi'
- 'Megaphyllites belongs to Megaphyllitidae'
- 'Metacarnites belongs to Tibetitidae'
- 'Metacarnites footei belongs to Metacarnites' according to Diener 1908
- 'Metacarnites footei belongs to Metacarnites'
- 'Metadinarites belongs to Aplococeratidae'
- 'Metahedenstroemia desertorum belongs to Metahedenstroemia' according to Johnston 1941
- 'Metahedenstroemia desertorum is recombined as Neoclypites desertorum'
- 'Metasibirites belongs to Metasibiritidae'
- 'Metasturia belongs to Ptychitidae'
- 'Metatirolites belongs to Buchitidae'
- 'Microtropites was reranked as Tropites (Microtropites) and belongs to Tropites' according to Mojsisovics 1893
- 'Miltites belongs to Haloritidae'
- 'Miltites rastli belongs to Miltites'
- 'Mojsisovicsites belongs to Tibetitidae'
- 'Mojsisovicsites crassecostatus belongs to Mojsisovicsites' according to Gemmellaro 1904
- 'Mojsisovicsites crassecostatus belongs to Mojsisovicsites'
- 'Molengraaffites belongs to Haloritidae'
- 'Muensterites belongs to Arpaditidae'
- 'Nannites belongs to Nannitidae'
- 'Nathorstites belongs to Nathorstitidae'
- 'Nathorstites alaskanus belongs to Nathorstites'
- 'Nautilus cymbiformis is recombined as Joannites cymbiformis'
- 'Nautilus floridus is recombined as Carnites floridus'
- 'Neoclypites belongs to Carnitidae'
- 'Neodalmatites belongs to Longobarditinae'
- 'Neopopanoceras belongs to Megaphyllitidae'
- 'Neotibetites weteringi belongs to Neotibetites' according to Krumbeck 1913
- 'Neotibetites weteringi belongs to Neotibetites'
- 'Nevadites belongs to Trachyceratidae'
- 'Nevadites merriami belongs to Nevadites'
- 'Nitanoceras belongs to Megaphyllitidae'
- 'Noetlingites belongs to Hungaritidae'
- 'Noridiscites belongs to Noridiscitidae'
- 'Norites breguzzanus belongs to Norites' according to Mojsisovics 1881
- 'Norites breguzzanus is recombined as Longobardites breguzzanus'
- 'Orestites belongs to Lobitidae'
- 'Orestites frechi belongs to Orestites' according to Renz 1911
- 'Orestites frechi belongs to Orestites'
- 'Orthoceltites belongs to Celtitidae'
- 'Otoceltites belongs to Celtitidae'
- 'Palicites belongs to Tibetitidae'
- 'Palicites mojsisovicsi belongs to Palicites'
- 'Paracladiscites belongs to Cladiscitidae'
- 'Paracochloceras belongs to Cochloceratidae'
- 'Paradidymites belongs to Didymitidae'
- 'Paradidymites waageni belongs to Paradidymites'
- 'Paradistichites belongs to Distichitidae'
- 'Paraganides belongs to Haloritidae'
- 'Paraganides californicus belongs to Paraganides'
- 'Paragymnites belongs to Pinacoceratidae'
- 'Parahauerites belongs to Carnitidae'
- 'Parajuvavites belongs to Haloritidae'
- 'Parajuvavites blanfordi belongs to Parajuvavites' according to Mojsisovics 1896
- 'Parajuvavites blanfordi belongs to Parajuvavites'
- 'Parapinacoceras belongs to Pinacoceratidae'
- 'Parapopanoceras belongs to Megaphyllitidae'
- 'Pararcestes belongs to Arcestidae'
- 'Parasturia belongs to Ptychitidae'
- 'Parathisbites belongs to Thisbitidae'
- 'Paratibetites belongs to Tibetitidae'
- 'Paratibetites bertrandi belongs to Paratibetites'
- 'Paratrachyceras belongs to Trachyceratidae'
- 'Paratropites (Gymnotropites) americanus is recombined as Gymnotropites americanus'
- 'Paratropites (Paulotropites) is reassigned into Tropites' according to Mojsisovics 1893
- 'Peripleurites belongs to Choristoceratidae'
- 'Perrinoceras belongs to Longobarditinae'
- 'Phormedites belongs to Buchitidae'
- 'Phormedites juvavicus belongs to Phormedites'
- 'Phyllocladiscites belongs to Cladiscitidae'
- 'Pinacoceras belongs to Pinacoceratidae'
- 'Pinacoceras (Parapinacoceras) belongs to Pinacoceras' according to Arthaber 1927
- 'Parapinacoceras is replaced by Eupinacoceras'
- 'Pinacoceras (Pompeckjites) was reranked as Pompeckjites and belongs to Pinacoceratidae'
- 'Pinacoceras aspidoides belongs to Pinacoceras' according to Diener 1900
- 'Pinacoceras aspidoides is recombined as Parapinacoceras aspidoides'
- 'Pinacoceras neglectum is recombined as Protoplatytes neglectus'
- 'Pinacoceras platyphyllum is recombined as Placites platyphyllus'
- 'Pinacoceras praefloridum is recombined as Hyattites praefloridus'
- 'Pinacoceras subimperator is recombined as Eupinacoceras subimperator'
- 'Pinacoplacites belongs to Pinacoceratidae'
- 'Placites belongs to Pinacoceratidae'
- 'Placites meridianus belongs to Placites' according to Welter 1914
- 'Placites meridianus is recombined as Pinacoplacites meridianus'
- 'Placites sakuntala is recombined as Paragymnites sakuntala'
- 'Platytes is replaced by Protoplatytes'
- 'Polycyclus is replaced by Hannaoceras'
- 'Polycyclus nodifer is recombined as Sympolycyclus nodifer'
- 'Polysphinctoceras is an objective synonym of Hannaoceras'
- 'Popanoceras haugi is recombined as Neopopanoceras haugi'
- 'Popanoceras hyatti belongs to Popanoceras' according to Mojsisovics 1886
- 'Popanoceras hyatti is recombined as Ptychopopanoceras hyatti'
- 'Popanoceras mcconnelli is recombined as Nathorstites mcconnelli'
- 'Proarcestes belongs to Arcestidae'
- 'Procladiscites belongs to Cladiscitidae'
- 'Procladiscites brancoi belongs to Procladiscites'
- 'Procladiscites crassus is recombined as Phyllocladiscites crassus'
- 'Procladiscites molaris is recombined as Psilocladiscites molaris'
- 'Proteusites belongs to Proteusitidae'
- 'Proteusites kellneri belongs to Proteusites'
- 'Protoplatytes belongs to Pinacoceratidae'
- 'Protrachyceras belongs to Trachyceratidae'
- 'Pseudaplococeras belongs to Aplococeratidae'
- 'Pseudocarnites belongs to Carnitidae'
- 'Pseudocarnites arthaberi belongs to Pseudocarnites' according to Simionescu 1913
- 'Pseudocarnites arthaberi belongs to Pseudocarnites'
- 'Pseudodanubites belongs to Danubitidae'
- 'Pseudohalorites belongs to Haloritidae'
- 'Pseudoharpoceras idahoense is recombined as Pseudarniotites idahoensis'
- 'Pseudosirenites belongs to Trachyceratidae'
- 'Psilocladiscites belongs to Cladiscitidae'
- 'Psilolobites belongs to Lobitidae'
- 'Psilolobites was reranked as Lobites (Psilolobites) and belongs to Lobites' according to Renz 1911
- 'Psilosturia belongs to Ptychitidae'
- 'Pterotoceras belongs to Tibetitidae'
- 'Pterotoceras abnorme belongs to Pterotoceras' according to Diener 1923
- 'Pterotoceras abnorme is recombined as Dimorphotoceras abnorme'
- 'Pterotoceras arthaberi belongs to Pterotoceras' according to Welter 1915
- 'Pterotoceras arthaberi belongs to Pterotoceras'
- 'Ptycharcestes belongs to Arcestidae'
- 'Ptycharcestes rugosus belongs to Ptycharcestes' according to Mojsisovics 1893
- 'Ptycharcestes rugosus belongs to Ptycharcestes'
- 'Ptychites belongs to Ptychitidae'
- 'Ptychites flexuosus is recombined as Flexoptychites flexuosus'
- 'Ptychites gerardi belongs to Ptychites' according to Blanford 1863
- 'Ptychites gerardi is recombined as Aristoptychites gerardi'
- 'Ptychites meeki is recombined as Alloptychites meeki'
- 'Ptychopopanoceras belongs to Megaphyllitidae'
- 'Ptychosphaerites belongs to Isculitidae'
- 'Rhabdoceras belongs to Choristoceratidae'
- 'Rhabdoceras suessi belongs to Rhabdoceras'
- 'Rhaetites belongs to Arcestidae'
- 'Rimkinites belongs to Carnitidae'
- 'Rimkinites edmondii belongs to Rimkinites' according to Diener 1908
- 'Romanites belongs to Joannitidae'
- 'Romanites simionescui belongs to Romanites'
- 'Sagenites belongs to Sagenitinae'
- 'Sagenitidae was reranked as the subfamily Sagenitinae and belongs to Haloritidae'
- 'Sandlingites belongs to Clydonitidae'
- 'Sibyllites belongs to Tropitidae'
- 'Sibyllites planorbis is recombined as Tropigymnites planorbis'
- 'Sibyllites tenuispinatus belongs to Sibyllites' according to Mojsisovics 1893
- 'Sibyllites tenuispinatus belongs to Sibyllites'
- 'Siculites belongs to Thisbitidae'
- 'Siculites dolomiticus belongs to Siculites'
- 'Siculites dolomiticus belongs to Siculites' according to Gemmellaro 1904
- 'Silenticeras belongs to Arpaditidae'
- 'Sirenites belongs to Trachyceratidae'
- 'Sirenites vredenburgi is recombined as Vredenburgites vredenburgi'
- 'Sirenites vredenburgi belongs to Sirenites' according to Diener 1906
- 'Smithoceras belongs to Isculitidae'
- 'Smithoceras is replaced by Hannaoceras'
- 'Sphaerites is replaced by Ptychosphaerites'
- 'Sphaerites globulus is recombined as Ptychosphaerites globulus'
- 'Sphingites belongs to Sphingitidae'
- 'Spitisculites is an objective synonym of Isculites'
- 'Steinmannites belongs to Clionitidae'
- 'Stenarcestes belongs to Arcestidae'
- 'Stikinoceras belongs to Tibetitidae'
- 'Stikinoceras kerri belongs to Stikinoceras'
- 'Sturia belongs to Ptychitidae'
- 'Sturia gracilis belongs to Sturia' according to Hauer 1892
- 'Sturia gracilis is recombined as Metasturia gracilis'
- 'Sturia mongolica is recombined as Psilosturia mongolica'
- 'Styrites belongs to Tropitidae'
- 'Styrites tropitiformis belongs to Styrites' according to Mojsisovics 1893
- 'Styrites tropitiformis belongs to Styrites'
- 'Sympolycyclus belongs to Choristoceratidae'
- 'Tardeceras belongs to Haloritidae'
- 'Tardeceras parvum belongs to Tardeceras'
- 'Thanamites belongs to Isculitidae'
- 'Thanamites bicuspidatus belongs to Thanamites' according to Diener 1908
- 'Thanamites bicuspidatus belongs to Thanamites'
- 'Thetidites belongs to Metasibiritidae'
- 'Thetidites huxleyi belongs to Thetidites'
- 'Thisbites belongs to Thisbitidae'
- 'Thisbites agricolae belongs to Thisbites'
- 'Thisbites meleagri is recombined as Parathisbites meleagri'
- 'Tibetites belongs to Tibetitidae'
- 'Tibetites (Neotibetites) was reranked as Neotibetites and belongs to Tibetitidae'
- 'Tibetites ryalli belongs to Tibetites'
- 'Timorodidymites belongs to Didymitidae'
- 'Timorotropites belongs to Tropitidae'
- 'Tornquistites belongs to Tropiceltitidae'
- 'Tornquistites evolutus belongs to Tornquistites'
- 'Trachyceras belongs to Trachyceratidae'
- 'Trachyceras avisianum is recombined as Aplococeras avisianum'
- 'Trachyceras avisianum is recombined as Dinarites avisianus' according to Mojsisovics 1882
- 'Trachyceras canadense is recombined as Dawsonites canadensis'
- 'Trachyceras cuccense is recombined as Cuccoceras cuccense'
- 'Trachyceras epolense belongs to Trachyceras' according to Mojsisovics 1878
- 'Trachyceras epolense is recombined as Celtites epolensis'
- 'Trachyceras hofmanni belongs to Trachyceras' according to Boekh 1873
- 'Trachyceras hofmanni is recombined as Paratrachyceras hofmanni'
- 'Trachyceras liepoldti is recombined as Arpadites liepoldti' according to Mojsisovics 1882
- 'Trachyceras liepoldti is recombined as Hyparpadites liepoldti'
- 'Trachysagenites belongs to Sagenitinae'
- 'Trachystenoceras belongs to Arpaditidae'
- 'Traskites belongs to Clionitidae'
- 'Tritropidoceras belongs to Tropiceltitidae'
- 'Tritropidoceras packardi belongs to Tritropidoceras'
- 'Tropiceltites belongs to Tropiceltitidae'
- 'Tropiceltites arietitoides belongs to Tropiceltites' according to Mojsisovics 1893
- 'Tropiceltites arietitoides is recombined as Arietoceltites arietitoides'
- 'Tropiceltites laevis belongs to Tropiceltites' according to Mojsisovics 1893
- 'Tropiceltites laevis is recombined as Arnioceltites laevis'
- 'Tropigastrites belongs to Celtitidae'
- 'Tropigastrites trojanus belongs to Tropigastrites'
- 'Tropigymnites belongs to Celtitidae'
- 'Tropites belongs to Tropitidae'
- 'Tropites (Anatropites) was reranked as Anatropites and belongs to Tropitidae'
- 'Tropites (Anatropites) spinosus belongs to Tropites (Anatropites)' according to Mojsisovics 1893
- 'Tropites (Anatropites) spinosus is recombined as Anatropites spinosus'
- 'Tropites (Microtropites) galeolus belongs to Tropites (Microtropites)' according to Mojsisovics 1893
- 'Tropites (Microtropites) galeolus is recombined as Microtropites galeolus'
- 'Tropites (Paratropites) was reranked as Paratropites and belongs to Tropitidae'
- 'Tropites (Paratropites) bidichotomus belongs to Tropites (Paratropites)' according to Mojsisovics 1893
- 'Tropites (Paratropites) bidichotomus is recombined as Paratropites bidichotomus'
- 'Tropites (Paulotropites) labiatus belongs to Tropites (Paulotropites)' according to Mojsisovics 1893
- 'Tropites (Paulotropites) labiatus is recombined as Paulotropites labiatus'
- 'Tropites dacus is recombined as Jovites dacus'
- 'Tropites dubiosus is recombined as Timorotropites dubiosus'
- 'Velebites belongs to Aplococeratidae'
- 'Velebites dinaricus belongs to Velebites' according to Salopek 1918
- 'Velebites dinaricus belongs to Velebites'
- 'Vredenburgites belongs to Trachyceratidae'
- 'Waldthausenites belongs to Haloritidae'
- 'Waldthausenites malayicus belongs to Waldthausenites' according to Welter 1914
- 'Waldthausenites malayicus belongs to Waldthausenites'
- 'Welterites belongs to Trachyceratidae'
- 'Welterites egregius belongs to Welterites' according to Diener 1923
- 'Welterites egregius belongs to Welterites'
- 'Xenodrepanites belongs to Arpaditidae'
- 'Xiphogymnites belongs to Gymnitidae'