List of ammonite genera

This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms. The list includes genera that are commonly accepted as valid, as well as those that may be invalid or doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered ammonites.

Reliability of this list
Most of the generic names in this list come from Jack Sepkoski's 2002 compendium of marine fossil genera, which can be corroborated by other sources such as Part L, Ammonoidea, in the Treatise on Invertebrate Paleontology. Additional generic names included come from the Treatise or various peer review scientific journals.



Ab

 * Abbasites
 * Abichites
 * Abrytasites

Ac

 * Acanthaecites
 * Acanthinites
 * Acanthoceras
 * Acanthoceratites
 * Acanthoclymenia
 * Acanthodiscus
 * Acanthohoplites
 * Acantholytoceras
 * Acanthopleuroceras
 * Acanthoplites
 * Acanthoscaphites
 * Accardia
 * Achilleoceras
 * Acompsoceras
 * Aconeceras
 * Acriclymenia
 * Acrimeroceras
 * Acrioceras
 * Acrocanites
 * Acrochordiceras
 * Acuariceras
 * Acuticostites
 * Acutimitoceras

Ad

 * Adkinsia
 * Adkinsites
 * Adnethiceras
 * Adrianites

Ae

 * Aegasteroceras
 * Aegoceras
 * Aegocrioceras
 * Aegolytoceras
 * Aenigmatoceras

Ag

 * Agassiceras
 * Agastrioceras
 * Agathiceras
 * Agoniatites

Ai

 * Ainoceras
 * Aioloceras

Ak

 * Akmilleria
 * Aktubinskia
 * Aktubites
 * Aktuboclymenia

Al

 * Alanites
 * Alaoceras
 * Albanites
 * Alcidellus
 * Aldanites
 * Alfeldites
 * Algericeras
 * Algerites
 * Alligaticeras
 * Alloceratites
 * Alloclionites
 * Allocrioceras
 * Alloptychites
 * Almites
 * Almohadites
 * Alocolytoceras
 * Alpinites
 * Alsatites
 * Altudoceras
 * Alurites

Am

 * Amaltheus
 * Amarassites
 * Amauroceras
 * Ambites
 * Ammonellipsites
 * Ammonitoceras
 * Ammonoceratites
 * Amoebites
 * Amoeboceras
 * Amorina
 * Amphipoanoceras
 * Amphistephanites
 * Ampthillia

An

 * Anacleoniceras
 * Anadesmoceras
 * Anaflemingites
 * Anagaudryceras
 * Anagymnites
 * Anagymnotoceras
 * Anahamulina
 * Anahoplites
 * Anaklinoceras
 * Analytoceras
 * Ananorites
 * Anapachydiscus
 * Anarcestes
 * Anascaphites
 * Anasibirites
 * Anasirenites
 * Anatibetites
 * Anatomites
 * Anatropites
 * Anatsabites
 * Anavirgatites
 * Anaxenaspis
 * Anclyoceras
 * Ancolioceras
 * Andersonites
 * Anderssonoceras
 * Andesites
 * Andiceras
 * Androgynoceras
 * Anetoceras
 * Aneuretoceras
 * Anfaceras
 * Anglesites
 * Angranoceras
 * Angulaticeras
 * Anisarcestes
 * Anisoceras
 * Ankinatsytes
 * Annuloceras
 * Anolcites
 * Anotoceras
 * Antarcticoceras
 * Anthracoceras
 * Anthracoceratites
 * Anthracoceratoides

Ap

 * Aphantites
 * Apleuroceras
 * Aplococeras
 * Apoderoceras
 * Aposphinctoceras
 * Apsorroceras

Aq

 * Aquilonites

Ar

 * Araneites
 * Araxoceras
 * Arcanoceras
 * Arcestes
 * Archoceras
 * Arcthoplites
 * Arcticoceras
 * Arctocephalites
 * Arctoceras
 * Arctogymnites
 * Arctohungarites
 * Arctomeekoceras
 * Arctomercaticeras
 * Arctoprionites
 * Arctoptychites
 * Arctosirenites
 * Arctotirolites
 * Arestoceras
 * Argentiniceras
 * Argolites
 * Argonauticeras
 * Argosirenites
 * Arianites
 * Aricoceras
 * Arieticeras
 * Arietites
 * Arietoceltites
 * Arisphinctes
 * Aristoceras
 * Aristoceratoides
 * Aristoptychites
 * Arkanites
 * Armatites
 * Arnioceltites
 * Arnioceras
 * Arniotites
 * Arpadites
 * Arthaberites
 * Artinksia
 * Artioceras
 * Artioceratoides

As

 * Asaphoceras
 * Asapholytoceras
 * Asklepioceras
 * Aspenites
 * Asphinctites
 * Aspidoceras
 * Aspidostephanus
 * Aspinoceras
 * Asteroceras
 * Asthenoceras
 * Astiericeras
 * Astieridiscus
 * Astreptoceras
 * Asturoceras

At

 * Ataxioceras
 * Atlantoceras
 * Atsabites

Au

 * Audaxlytoceras
 * Audouliceras
 * Augurites
 * Aulacaganides
 * Aulacosphinctes
 * Aulacosphinctoides
 * Aulacostephanus
 * Aulasimoceras
 * Aulatornoceras
 * Austiniceras
 * Australiceras
 * Austroceratites
 * Austrotrachyceras

Av

 * Aveyroniceras

Ax

 * Axinolobus
 * Axonoceras

B



 * Bacchites
 * Bactrites
 * Baculina
 * Baculites
 * Badiotites
 * Bagnolites
 * Balatonites
 * Balearites
 * Balkanites
 * Balticeras
 * Balvia
 * Bamyaniceras
 * Barguesiella
 * Baronnites
 * Barrandeites
 * Barremites
 * Barroisiceras
 * Baschkirites
 * Bashkortoceras
 * Baskaniiceras
 * Basleoceras
 * Bastelia
 * Bauchioceras
 * Bayleites
 * Beaniceras
 * Beatites
 * Behemoth
 * Beleutoceras
 * Beloceras
 * Benacoceras
 * Beneckeia
 * Benueites
 * Berbericeras
 * Berniceras
 * Berriasella
 * Berrosiceras
 * Betyokites
 * Beudanticeras
 * Beudantiella
 * Bevahites
 * Beyrichites
 * Beyrichoceras
 * Beyrichoceratoides
 * Bhimaites
 * Bifericeras
 * Bigotites
 * Bihenduloceras
 * Bilinguites
 * Billcobbanoceras
 * Biloclymenia
 * Biltnerites
 * Binatisphinctes
 * Binneyites
 * Biplices
 * Bisatoceras
 * Blanfordiceras
 * Bochianites
 * Bodylevskites
 * Boehmoceras
 * Boesites
 * Bogdanoceras
 * Bollandites
 * Bollandoceras
 * Boreomeekoceras
 * Borissjakoceras
 * Borkinia
 * Bornhardticeras
 * Bosnites
 * Bostrychoceras
 * Boucaulticeras
 * Bouleiceras
 * Bradfordia
 * Brahmaites
 * Bramkampia
 * Brancoceras
 * Branneroceras
 * Branneroceratoides
 * Brasilia
 * Bredyia
 * Brevikites
 * Brewericeras
 * Brightia
 * Brodieia
 * Brotheotrachyceras &mdash; originally published as a subgenus of Trachyceras
 * Brouwerites
 * Buchiceras
 * Budaiceras
 * Buddhaites
 * Bukowskiites
 * Bullatimorphites
 * Bulogites
 * Bunburyiceras
 * Burckhardites
 * Burijites
 * Busnardoites

Ca

 * Cabrievoceras
 * Cadoceras
 * Cadomites
 * Cadomoceras
 * Caenisites
 * Caenocyclus
 * Caenolyroceras
 * Cainoceras
 * Calaiceras
 * Calanquites
 * Californiceras
 * Callihoplites
 * Calliphylloceras
 * Calliptychoceras
 * Callizoniceras
 * Caloceras
 * Calycoceras
 * Campylites
 * Canadoceras
 * Canavarella
 * Canavaria
 * Canavarites
 * Cancelloceras
 * Cantabricanites
 * Cantabrigites
 * Cardiella
 * Cardioceras
 * Carinoceras
 * Carinoclymenia
 * Carinophylloceras
 * Carnites
 * Carstenia
 * Carthaginites
 * Catacoeloceras
 * Catasigaloceras
 * Catulloceras
 * Caucasites
 * Caumontisphinctes
 * Cavilentia

Ce

 * Ceccaites
 * Celaeceras
 * Cenisella
 * Ceratites
 * Ceratpbeloceras
 * Chamoussetia

Ch

 * Chanasia
 * Changhsingoceras
 * Chartronia
 * Cheiloceras
 * Cheloniceras
 * Cheltonia
 * Chesapeakiceras
 * Chetaites
 * Chieseiceras
 * Chioceras
 * Chiotites
 * Choffatia
 * Choffaticeras
 * Chondroceras
 * Choristoceras
 * Christioceras
 * Christophoceras
 * Chumazites

Ci

 * Cibolaites
 * Cibolites
 * Cicatrites
 * Cirroceras

Cl

 * Cladiscites
 * Clambites
 * Cleistosphinctes
 * Cleoniceras
 * Cleviceras
 * Clinolobus
 * Clionitites
 * Clioscaphites
 * Clistoceras
 * Cloioceras
 * Cluthoceras
 * Clydomphalites
 * Clydoniceras
 * Clydonites
 * Clymenia
 * Clymenoceras
 * Clypeoceras

Co

 * Coahuilites
 * Cobbanites
 * Cobbanoscaphites
 * Cochleiferoceras
 * Cochloceras
 * Cochlocrioceras
 * Coeloceltites
 * Coeloceras
 * Coeloderoceras
 * Coilopoceras
 * Colchidites
 * Collectoceras
 * Collignoniceras
 * Collignonites
 * Collina
 * Collotia
 * Colombiceras
 * Coloradoscaphites
 * Columbites
 * Concavites
 * Conlinoceras
 * Constileioceras
 * Convoluticeras
 * Cordubiceras
 * Coroceras
 * Corongoceras
 * Coroniceras
 * Coronites
 * Costaclymenia
 * Costidiscus
 * Costigymnites
 * Costileioceras
 * Costimitoceras
 * Cottreauites
 * Couloniceras
 * Cowtoniceras

Cr

 * Cranocephalites
 * Craspedites
 * Craspedodiscus
 * Crassiceras
 * Crassiplanulites
 * Crassotornoceras
 * Cravenites
 * Cravenoceras
 * Cravenoceratoides
 * Creniceras
 * Crickites
 * Crimites
 * Crioceras
 * Crioceratites
 * Cruasiceras
 * Crucilobiceras
 * Crussoliceras
 * Cryptoclymenia
 * Cryptotexanites

Ct

 * Ctenobactrites
 * Cteroclymenia

Cu

 * Cubaochetoceras
 * Cuccoceras
 * Cuneicardioceras
 * Cunitoceras
 * Cunningtoniceras
 * Cutchisphinctes
 * Cuyaniceras

Cy

 * Cyclobactrites
 * Cycloceltites
 * Cyclolobus
 * Cycloclymenia
 * Cylioceras
 * Cymaceras
 * Cymaclymenia
 * Cymahoplites
 * Cymbites
 * Cymoceras
 * Cyrtobactrites
 * Cyrtochilus
 * Cyrtoclymenia
 * Cyrtopleurites
 * Cyrtosiceras

Cz

 * Czekanowskites

Da

 * Dactylioceras
 * Dagnoceras
 * Daixites
 * Dalmasiceras
 * Dalmatites
 * Damaisiceras
 * Damesiceras
 * Damesites
 * Danubisphinctes
 * Danubites
 * Daphnites
 * Daraelites
 * Darellia
 * Darvasiceras
 * Dasyceras
 * Daxatina
 * Dayiceras

De

 * Decipia
 * Decorites
 * Deiradoceras
 * Delecticeras
 * Delepinoceras
 * Delphinites
 * Demarezites
 * Derolytoceras
 * Deshayesites
 * Desmoceras
 * Desmophyllites
 * Desmoscaphites
 * Devonobactrites
 * Devonopronorites

Dh

 * Dhosaites
 * Dhrumaites

Di

 * Diaboloceras
 * Diadochoceras
 * Diamanticeras
 * Diaplococeras
 * Diaziceras
 * Dichotomites
 * Dichotomoceras
 * Dichotomosphinctes
 * Dickersonia
 * Dicostella
 * Didymites
 * Didymoceras
 * Dieneria
 * Difuntites
 * Digitophyllites
 * Dilatobactrites
 * Dimeroceras
 * Dimeroclymenia
 * Dimorphinites
 * Dimorphites
 * Dimorphoceras
 * Dimorphoceratoides
 * Dimorphoplites
 * Dimorphotoceras
 * Dinarites
 * Diodochoceras
 * Dionites
 * Diplacmoceras
 * Diplasioceras
 * Diplesioceras
 * Diplomoceras
 * Diplosirenites
 * Dipoloceras
 * Dipoloceroides
 * Dirrymoceras
 * Discoceratites
 * Discoclymenia
 * Discohoplites
 * Discophiceras
 * Discophyllites
 * Discoptychites
 * Discoscaphites
 * Discosphinctes
 * Discosphinctoides
 * Discotropites
 * Distichites
 * Distichoceras
 * Distoloceras
 * Dittmarites
 * Divisosphinctes

Dj

 * Djurjuriceras

Do

 * Dobrodgeiceras
 * Dobrogeites
 * Docidoceras
 * Dolikephalites
 * Domanikoceras
 * Dombarigloria
 * Dombarites
 * Dombarocanites
 * Donetzoceras
 * Dorikranites
 * Dorsetensia
 * Dorsoplanites
 * Dorsomorphites
 * Doryceras
 * Doubichites
 * Doulingoceras
 * Douvilleiceras

Dr

 * Drepanites
 * Drumoceras

Du

 * Duashnoceras
 * Dufrenoya
 * Dumortieria
 * Dunbarites
 * Dunedinites
 * Dunveganoceras
 * Durangites
 * Durotrigensia
 * Durvilleoceras

Dy

 * Dyscheiloceras

Dz

 * Dzhaprakoceras
 * Dzhulfoceras

E



 * Eboraciceras
 * Eboroceras
 * Ebrayiceras
 * Echioceratoides
 * Echioceras
 * Ectocentrites
 * Ectolcites
 * Edmundites
 * Egrabensiceras
 * Eleganticeras
 * Elephantoceras
 * Ellipsoceras
 * Elobiceras
 * Emaciaticeras
 * Emileia
 * Emilites
 * Emperoceras
 * Enayites
 * Engonoceras
 * Enosphinctes
 * Entogonites
 * Eoacrochordiceras
 * Eoaraxoceras
 * Eoasianites
 * Eobeloceras
 * Eocanites
 * Eocephalites
 * Eochetoceras
 * Eocrioceratites
 * Eodanubites
 * Eoderoceras
 * Eodesmoceras
 * Eodouvilleiceras
 * Eogaudryceras
 * Eogonioloboceras
 * Eogunnarites
 * Eogymnites
 * Eohecticoceras
 * Eoheteroceras
 * Eohyattoceras
 * Eomadrasites
 * Eonomismoceras
 * Eopachydiscus
 * Eoparalegoceras
 * Eophyllites
 * Eoprodromites
 * Eoprotrachyceras
 * Eopsiloceras
 * Eosagenites
 * Eoscaphites
 * Eoschistoceras
 * Eosturia
 * Eotetragonites
 * Eothalassoceras
 * Eothinites
 * Eotissotia
 * Eowellerites
 * Epacrochordiceras
 * Epadrianites
 * Epancyloceras
 * Eparietites
 * Epaspidoceras
 * Epicanites
 * Epiceltites
 * Epiceltitoides
 * Epicephalites
 * Epiceratites
 * Epicheloniceras
 * Epicosmoceras
 * Epideroceras
 * Epiglyphioceras
 * Epiglyptoxoceras
 * Epigonites
 * Epigymnites
 * Epihoplites
 * Epijuresanites
 * Epileymeriella
 * Epimayaites
 * Epimorphoceras
 * Epipallasiceras
 * Epipeltoceras
 * Episageceras
 * Episculites
 * Epistrenoceras
 * Epitauroceras
 * Epithalassoceras
 * Epitornoceras
 * Epivirgatites
 * Epiwocklumeria
 * Epophioceras
 * Erbenoceras
 * Eremites
 * Erinoceras
 * Erioliceras
 * Eristavites
 * Ermoceras
 * Erycites
 * Erymnoceras
 * Erymnocerites
 * Esericeras
 * Euagassiceras
 * Euaptetoceras
 * Euaspidoceras
 * Eubaculites
 * Eubostrychoceras
 * Eubranoceras
 * Eucalycoceras
 * Eucoroniceras
 * Eucycloceras
 * Eudiscoceras
 * Eudmetoceras
 * Euflemingites
 * Euhoplites
 * Euhoploceras
 * Euhystrichoceras
 * Euisculites
 * Eulophoceras
 * Eulytoceras
 * Eumedlicottia
 * Eumorphoceras
 * Euomphaloceras
 * Eupachydiscus
 * Euphylloceras
 * Eupinacoceras
 * Eupleuroceras
 * Euprionoceras
 * Euptychoceras
 * Eurites
 * Euroceras
 * Eurycephalites
 * Eurynoticeras
 * Eusagenites
 * Eutomoceras
 * Euturrilites
 * Exiteloceras
 * Exotornoceras
 * Ezilloella

F



 * Fagesia
 * Falciclymenia
 * Falciferella
 * Falcitornoceras
 * Fallacites
 * Falloticeras
 * Fanninoceras
 * Farbesiceras
 * Farnhamia
 * Fascipericyclus
 * Favrella
 * Fayettevillea
 * Fehlmannites
 * Ferganoceras
 * Ficheuria
 * Fikaites
 * Finiclymenia
 * Fissilobiceras
 * Flabellisphinctes
 * Flemingites
 * Flexiclymenia
 * Flexispinites
 * Flexoptychites
 * Flickia
 * Fontanelliceras
 * Fontannesia
 * Fontannesiella
 * Foordites
 * Forbesiceras
 * Forresteria
 * Fournierella
 * Frankites
 * Frechiella
 * Frechites
 * Frenguelliceras
 * Fresvillia
 * Frogdenites
 * Fuciniceras
 * Funiferites

G



 * Gabbioceras
 * Gabillytes
 * Gaetanoceras
 * Gagaticeras
 * Gaitherites
 * Galaticeras
 * Galbanites
 * Gangadharites
 * Garantiana
 * Gargasiceras
 * Garniericeras
 * Garnierisphinctes
 * Garroniceras
 * Gastrioceras
 * Gastroplites
 * Gattendorfia
 * Gattenpleura
 * Gaudryceras
 * Gaurites
 * Gauthiericeras
 * Gazdaganites
 * Gemmellaroceras
 * Gentoniceras
 * Genuclymenia
 * Georgioceras
 * Germariceras
 * Gevanites
 * Geyeroceras
 * Giovaraites
 * Girtyoceras
 * Glabrophysodoceras
 * Glamocites
 * Glaphyrites
 * Glassoceras
 * Glatziella
 * Glaucolithites
 * Gleboceras
 * Gleviceras
 * Glochiceras
 * Glottoptychinites
 * Glyphidites
 * Glyphiolobus
 * Glyptarpites
 * Glyptoceras
 * Glyptoxoceras
 * Gnomohalorites
 * Gogoceras
 * Goliathiceras
 * Goliathites
 * Goniatites
 * Gonioclymenia
 * Goniocyclus
 * Gonioglyphioceras
 * Gonioloboceras
 * Gonioloboceratoides
 * Gonionotites
 * Gonolkites
 * Goodhallites
 * Gracilisphinctes
 * Gracilites
 * Grambergia
 * Grammoceras
 * Grandidiericeras
 * Graphoceras
 * Gravesia
 * Grayiceras
 * Graysonites
 * Gregoryceras
 * Griesbachites
 * Groebericeras
 * Groenlandites
 * Grossouvria
 * Grossouvrites
 * Guembelites
 * Guhsania
 * Guleilmites
 * Guleimiceras
 * Gulielmina
 * Gulielmites
 * Gunnarites
 * Gyaloceras
 * Gymnites
 * Gymnodiscoceras
 * Gymnoplites
 * Gymnotoceras
 * Gymnotropites
 * Gyroceratites
 * Gyroclymenia
 * Gyronites

Ha

 * Haidingerites
 * Halilucites
 * Halorites
 * Hamites
 * Hamiticeras
 * Hamitoides
 * Hammatoceras
 * Hammatocyclus
 * Hamulina
 * Hamulinites
 * Hanielites
 * Hannaoceras
 * Hantkeniceras
 * Haploceras
 * Haplophylloceras
 * Haplopleuroceras
 * Haploscaphites
 * Haresiceras
 * Harpoceras
 * Harpoceratoides
 * Harpohildoceras
 * Harpophylloceras
 * Hatchericeras
 * Hauericeras
 * Hauerites
 * Haugia

He

 * Hebetoxyites
 * Hecticoceras
 * Hectioceras
 * Hectioceratoides
 * Hectoroceras
 * Hedenstroemia
 * Heinzia
 * Helicancylus
 * Helicocyclus
 * Helictites
 * Hemiaspenites
 * Hemibaculites
 * Hemigarantia
 * Hemihaploceras
 * Hemihoplites
 * Hemilecanites
 * Hemilytoceras
 * Hemiptychoceras
 * Hemisimoceras
 * Hemitetragonites
 * Hemitissotia
 * Hengestites
 * Heraclites
 * Herrickiceras
 * Hertleinites
 * Herznachites
 * Heteroceras
 * Heterotissotia
 * Hexaclymenia

Hi

 * Hibernicoceras
 * Hildaites
 * Hildoceras
 * Hildoceratoides
 * Hildoglochiceras
 * Himalayites
 * Himantoceras
 * Himavatites
 * Himispiticeras

Hl

 * Hlawiceras

Ho

 * Hodsonites
 * Hoeninghausia
 * Hoepenites
 * Hoffmannia
 * Holcodiscoides
 * Holcodiscus
 * Holcolissoceras
 * Holcophylloceras
 * Holcolytoceras
 * Holcoptychites
 * Hollandites
 * Holzapfeloceras
 * Holzbergia
 * Homerites
 * Homoceras
 * Homoceratoides
 * Homoeoplanulites
 * Hoplikosmokas
 * Hoplites
 * Hoplitoides
 * Hoplitoplacenticeras
 * Hoplocardioceras
 * Hoplocrioceras
 * Hoploscaphites
 * Hoplotropites
 * Horioceras
 * Hourcquia

Hu

 * Hubertoceras
 * Hudlestonia
 * Hudsonoceras
 * Huishuites
 * Hulenites
 * Hunanites
 * Hungarites

Hy

 * Hyattites
 * Hyattoceras
 * Hybonoticeras
 * Hypacanthoplites
 * Hyparpadites
 * Hypengonoceras
 * Hyperderoceras
 * Hypergoniatites
 * Hyperlioceras
 * Hyphantoceras
 * Hyphoplites
 * Hypisculites
 * Hypocladiscites
 * Hypophylloceras
 * Hypoturrilites
 * Hypoxynoticeras
 * Hyrcanites
 * Hysteroceras

I



 * Iberites
 * Idanoceras
 * Idiocycloceras
 * Idiohamites
 * Idoceras
 * Ilowaiskya
 * Imitoceras
 * Imlayiceras
 * Inaigymnites
 * Indigirites
 * Indigirophyllites
 * Indoceltites
 * Indocephalites
 * Indoceras
 * Indojuvavites
 * Indonesites
 * Indoscaphites
 * Indosphinctes
 * Iniskinites
 * Intoceras
 * Intornites
 * Intranodites
 * Involuticeras
 * Inyoites
 * Inzeroceras
 * Iranoceras
 * Irinoceras
 * Isculites
 * Isculitoides
 * Ismidites
 * Isohomoceras
 * Isohoplites
 * Isterites
 * Istreites
 * Ivoites

J



 * Jacobites
 * Janenschites
 * Japonites
 * Jauberticeras
 * Jeanneticeras
 * Jeanvogericeras
 * Jeletzkytes
 * Jellinekites
 * Jimboiceras
 * Jimenites
 * Joannites
 * Jouaniceras
 * Jovites
 * Juddiceras
 * Judicarites
 * Juraphyllites
 * Juresanites
 * Juvavites
 * Juvenites

K



 * Kabylites
 * Kachpurites
 * Kalloclymenia
 * Kamerunoceras
 * Kammerkaroceras
 * Kamptoclymenia
 * Kamptokephalites
 * Karaclymenia
 * Karagandoceras
 * Karamaiceras
 * Karamaites
 * Karangatites
 * Karapadites
 * Karaschiceras
 * Kardailites
 * Karlwaageites
 * Karsteniceras
 * Kashmirites
 * Katacanites
 * Katroliceras
 * Katrolites
 * Kayutoceras
 * Kazakhoceras
 * Kazakhoclymenia
 * Kazakhstania
 * Kazakhstanites
 * Kazanskyella
 * Kellawaysites
 * Kellnerites
 * Kelteroceras
 * Kenseyoceras
 * Kepplerites
 * Keppleritiana
 * Kerberites
 * Keyserlingites
 * Kheraiceras
 * Kheraites
 * Khvalynites
 * Kiaclymenia
 * Kielcensia
 * Kilianella
 * Kimoceras
 * Kingites
 * Kingoceras
 * Kinkeliniceras
 * Kiparisovia
 * Kiparisovites
 * Kirsoceras
 * Kitchinites
 * Klamathites
 * Klematosphinctes
 * Klipsteinia
 * Knemiceras
 * Koenenites
 * Kohaticeras
 * Koloceras
 * Komioceras
 * Koninckites
 * Korythoceras
 * Kosmermoceras
 * Kosmoceras
 * Kosmoclymenia
 * Kossmatella
 * Kossmatia
 * Kossmaticeras
 * Kourazoceras
 * Kozhimites
 * Krafftoceras
 * Kranaosphinctes
 * Krumbeckia
 * Kufengoceras
 * Kumatostephanus
 * Kurnubiella
 * Kushanites
 * Kutatissites

L



 * Labeceras
 * Laboceras
 * Labyrinthoceras
 * Laganoclymenia
 * Lagowites
 * Lamberticeras
 * Lamites
 * Lanceolites
 * Lanceoloboceras
 * Laqueoceras
 * Latanarcestes
 * Latisageceras
 * Laugeites
 * Lecanites
 * Lechites
 * Lecointriceras
 * Leconteiceras
 * Leconteites
 * Leeites
 * Lehmaniceras
 * Leioceras
 * Leiophyllites
 * Leislingites
 * Lemuroceras
 * Lenotropites
 * Lenticeras
 * Lenticoceltites
 * Leopolda
 * Leptaleoceras
 * Leptechioceras
 * Lepthoplites
 * Leptoceras
 * Leptonotoceras
 * Leptosphinctes
 * Leptotetragonites
 * Leukadiella
 * Lewesiceras
 * Lewyites
 * Leymeriella
 * Liardites
 * Liautaudia
 * Libycoceras
 * Lilloetia
 * Limaites
 * Linguaclymenia
 * Linguatornoceras
 * Lingyunites
 * Lioceratoides
 * Liosphinctes
 * Liparoceras
 * Lipuites
 * Lissoceras
 * Lissoceratoides
 * Lissoclymenia
 * Lissonia
 * Lissonites
 * Lithacoceras
 * Lithacosphinctes
 * Lithancylus
 * Lobites
 * Lobobactrites
 * Lobokosmokeras
 * Lobolytoceras
 * Lobosphinctes
 * Lobotornoceras
 * Loczyceras
 * Lomonossovella
 * Longaeviceras
 * Longobardites
 * Longobarditoides
 * Lopholobites
 * Lorioloceras
 * Lotzeites
 * Ludwigia
 * Lunuloceras
 * Lupherites
 * Luppovella
 * Lusitanites
 * Lycetticeras
 * Lyelliceras
 * Lyrogoniatites
 * Lytheoceras
 * Lyticoceras
 * Lytoceras
 * Lytocrioceras
 * Lytodiscoides
 * Lytogyroceras
 * Lytohoplites

Ma

 * Macrocephalites
 * Macroscaphites
 * Madagascarites
 * Maenioceras
 * Magharina
 * Malayites
 * Malladaites
 * Malletophychites
 * Maltoniceras
 * Mammites
 * Manambolites
 * Mancosiceras
 * Mangeroceras
 * Manoloviceras
 * Mantelliceras
 * Manticoceras
 * Manuaniceras
 * Maorites
 * Mapesites
 * Marathonites
 * Margaritropites
 * Marianoceras
 * Mariella
 * Marshallites
 * Martelites
 * Martolites
 * Masiaposites
 * Masonites
 * Maternoceras
 * Mathoceras
 * Mathoceratites
 * Maximites
 * Mayaites
 * Mazapilites

Me

 * Medlicottia
 * Meekoceras
 * Megalytoceras
 * Megaphyllites
 * Megapronorites
 * Megasphaeroceras
 * Megatyloceras
 * Meginoceras
 * Melagathiceras
 * Melchiorites
 * Melonites
 * Melvilloceras
 * Menabites
 * Menabonites
 * Meneghiniceras
 * Menuites
 * Menuthiocrioceras
 * Mercaticeras
 * Merocanites
 * Mescalites
 * Mesobeloceras
 * Mesocladiscites
 * Mesoclymenia
 * Mesodactylites
 * Mesogaudryceras
 * Mesopuzosia
 * Mesosimoceras
 * Mesoturrilites
 * Metabactrites
 * Metacanites
 * Metacarnites
 * Metacymbites
 * Metadagnoceras
 * Metaderoceras
 * Metadimorphoceras
 * Metadinarites
 * Metagravesia
 * Metahamites
 * Metahaploceras
 * Metahedenstroemia
 * Metahoplites
 * Metalegoceras
 * Metalytoceras
 * Metapatoceras
 * Metapeltoceras
 * Metaplacenticeras
 * Metapronorites
 * Metaptychoceras
 * Metarnioceras
 * Metasibirites
 * Metasigaloceras
 * Metassuria
 * Metatibetites
 * Metatissotia
 * Metengonoceras
 * Metinyoites
 * Metoicoceras
 * Metoxynoticeras
 * Metrolytoceras
 * Metussuria
 * Mexicoceras

Mi

 * Miccocephalites
 * Michalskia
 * Michiganites
 * Micracanthoceras
 * Microbactrites
 * Microbiplices
 * Microdactylites
 * Microderoceras
 * Micromphalites
 * Microtropites
 * Miklukhoceras
 * Miltites
 * Mimagoniatites
 * Mimimitoceras
 * Mimosphinctes
 * Mirilentia
 * Miroclymenia
 * Mirojuvavites
 * Mirosphinctes
 * Mitonia
 * Mixomanticoceras
 * Miyakoceras

Mo

 * Moffitites
 * Mojsisovicsites
 * Mojsisoviczia
 * Mojsvarites
 * Monacanthites
 * Mongoloceras
 * Monophyllites
 * Moremanoceras
 * Morphoceras
 * Morrisiceras
 * Morrowites
 * Mortoniceras
 * Moutoniceras

Mu

 * Mucrodactylites
 * Muensterites
 * Muensteroceras
 * Muniericeras

My

 * Myloceras

Na

 * Nairites
 * Nannites
 * Nannocardioceras
 * Nannolytoceras
 * Nannostephanus
 * Nannovascoceras
 * Nassichukites
 * Nathorstites
 * Nautellipsites

Ne

 * Neancyloceras
 * Nebraskites
 * Nebrodites
 * Negebites
 * Nejdia
 * Nelomites
 * Neoaganides
 * Neobibolites
 * Neocardioceras
 * Neochetoceras
 * Neocladiscites
 * Neoclypites
 * Neocolumbites
 * Neocomites
 * Neocosmoceras
 * Neocraspedites
 * Neocrimites
 * Neocrioceras
 * Neodimorphoceras
 * Neogastroplites
 * Neogauthiericeras
 * Neogeoceras
 * Neoglaphyrites
 * Neoglyphioceras
 * Neoglytoxoceras
 * Neogoniatites
 * Neograhamites
 * Neoharpoceras
 * Neohimavatites
 * Neohoploceras
 * Neoicoceras
 * Neokentoceras
 * Neolioceratoides
 * Neolissoceras
 * Neolobites
 * Neomantelliceras
 * Neomanticoceras
 * Neomicroceras
 * Neomorphoceras
 * Neopericyclus
 * Neopharciceras
 * Neophlycticeras
 * Neophylloceras
 * Neopopanoceras
 * Neopronorites
 * Neoprotrachyceras
 * Neoptychites
 * Neopulchellia
 * Neosaynoceras
 * Neoselwynoceras
 * Neoshumardites
 * Neosilesites
 * Neosirenites
 * Neostlingoceras
 * Neotibetites
 * Neouddenites
 * Neuqueniceras
 * Nevadisculites
 * Nevadites
 * Nevadoceras
 * Nevadophyllites
 * Newboldiceras
 * Newmarracarroceras

Ni

 * Niceforoceras
 * Nicklesia
 * Nicomedites
 * Nielsenoceras
 * Nigericeras
 * Nipponites
 * Nitanoceras

No

 * Nodiocoeloceras
 * Nodosageceras
 * Nodosoclymenia
 * Nodosohoplites
 * Nodotibetites
 * Noetlingites
 * Nolaniceras
 * Nomismoceras
 * Nordiceras
 * Nordophiceras
 * Noridiscites
 * Norites
 * Normannites
 * Nostoceras
 * Nothocephalites
 * Nothosporadoceras
 * Nothostephanus
 * Notoceras
 * Nowakites

Nu

 * Nuculoceras
 * Nummoceras

O



 * Obrutchevites
 * Obtusicostites
 * Ochetoceras
 * Ochotoceras
 * Odontodiscoceras
 * Oecoptychius
 * Oecotraustes
 * Oiophyllites
 * Oistoceras
 * Okribites
 * Olcostephanus
 * Olenekoceras
 * Olenikites
 * Onitshoceras
 * Onychoceras
 * Oosterella
 * Ophiceras
 * Ophilyroceras
 * Oppelia
 * Oraniceras
 * Orestites
 * Organoceras
 * Orionoides
 * Ornatoclymenia
 * Orthaspidoceras
 * Orthildaites
 * Orthoceltites
 * Orthogarantiana
 * Orthosphinctes
 * Orulganites
 * Ostlingoceras
 * Otoceltites
 * Otoceras
 * Otohoplites
 * Otoites
 * Otoscaphites
 * Ovaticeras
 * Owenites
 * Owenoceras
 * Oxintoceras
 * Oxybeloceras
 * Oxycerites
 * Oxydiscites
 * Oxylenticeras
 * Oxynoticeras
 * Oxyparoniceras
 * Oxytornoceras
 * Oxytropidoceras

Pa

 * Pachycardioceras
 * Pachyceras
 * Pachyclymenia
 * Pachydesmoceras
 * Pachydiscoides
 * Pachydiscus
 * Pachyerymnoceras
 * Pachylyroceras
 * Pachylytoceras
 * Pachypictonia
 * Pachysphinctes
 * Padagrosites
 * Padragosiceras
 * Palaeogoniatites
 * Palaeokazachstanites
 * Palaeophyllites
 * Palermites
 * Palicites
 * Palnerostephanus
 * Paltaopites
 * Paltechioceras
 * Pamphagosirenites
 * Paprothites
 * Paquiericeras
 * Paraacrochordiceras
 * Parabactrites
 * Parabehavites
 * Paraberriasella
 * Parabevalites
 * Paraboliceras
 * Paraboliceratoides
 * Paracadoceras
 * Paracalycoceras
 * Paracanthoplites
 * Paraceltites
 * Paraceratites
 * Paraceratitoides
 * Paracladiscites
 * Paracochloceras
 * Paraconlinoceras
 * Paracorniceras
 * Paracraspedites
 * Paracravenoceras
 * Paracrioceras
 * Paracuariceras
 * Paracymbites
 * Paradanubites
 * Paradasyceras
 * Paradicidia
 * Paradimeroceras
 * Paradimorphoceras
 * Paradinarites
 * Paradistichites
 * Paradolphia
 * Paraganides
 * Paragastrioceras
 * Paragattendorfia
 * Paragoceras
 * Paraguembelites
 * Paragymnites
 * Parahauerites
 * Parahildaites
 * Parahomoceras
 * Parahoplites
 * Parajaubertella
 * Parajuvavites
 * Parakellnerites
 * Paralcidia
 * Paralenticeras
 * Paralobites
 * Paralytoceras
 * Paramammites
 * Parammatoceras
 * Paranannites
 * Paranclyoceras
 * Parandiceras
 * Paranorites
 * Paranoritoides
 * Parapallasiceras
 * Parapatoceras
 * Parapeltoceras
 * Paraperrinites
 * Paraphyllites
 * Parapinacoceras
 * Paraplacites
 * Parapopanoceras
 * Parapronorites
 * Parapuzosia
 * Pararasenia
 * Pararcestes
 * Pararnioceras
 * Parasageceras
 * Parasaynoceras
 * Paraschartymites
 * Paraschistoceras
 * Parashumardites
 * Parasibirites
 * Parasilesites
 * Parasolenoceras
 * Paraspidites
 * Paraspidoceras
 * Paraspiticeras
 * Parastieria
 * Parastrenoceras
 * Parasturia
 * Paratexanites
 * Parathetidites
 * Parathisbites
 * Paratibites
 * Paratirolites
 * Paratissotia
 * Paratorleyoceras
 * Paratornoceras
 * Paratrachyceras
 * Paratropites
 * Paraturrilites
 * Paravirgatites
 * Parawedekindia
 * Parawocklumeria
 * Parayakutoceras
 * Parengonoceras
 * Parentites
 * Parinodiceras
 * Parkinsonia
 * Parodiceras
 * Parodontoceras
 * Paroecotraustes
 * Paroniceras
 * Paroxynoticeras
 * Partschiceras
 * Parussuria
 * Paryphoceras
 * Pascoeites
 * Paskentites
 * Passendorferia
 * Patagiosites
 * Paulotropites
 * Pavlovia
 * Pavloviceras

Pe

 * Pearylandites
 * Pectinatites
 * Pedioceras
 * Peltoceras
 * Peltoceratoides
 * Peltolytoceras
 * Peltomorphites
 * Pennoceras
 * Pentagonoceras
 * Pericarinoceras
 * Pericleites
 * Pericyclus
 * Peripleurites
 * Perisphinctes
 * Peritrochia
 * Pernoceras
 * Peroniceras
 * Peronoceras
 * Perrinites
 * Perrinoceras
 * Pervinquieria
 * Petitclercia
 * Petranoceras
 * Petrolytoceras
 * Petteroceras
 * Peytonoceras

Ph

 * Phaneroceras
 * Phanerostephanus
 * Pharciceras
 * Phaularpites
 * Phaulostephanus
 * Phaulozigzag
 * Phillipites
 * Phillipsoceras
 * Phlycticeras
 * Phlycticrioceras
 * Phlyseogrammoceras
 * Phoenixites
 * Phormedites
 * Phricodoceras
 * Phylloceras
 * Phyllocladiscites
 * Phyllopachyceras
 * Phylloptychoceras
 * Phyllytoceras
 * Phymatoceras
 * Physematites
 * Physeogrammoceras
 * Physodoceras

Pi

 * Picenia
 * Pictetia
 * Pictonia
 * Pimelites
 * Pinaclymenia
 * Pinacoceras
 * Pinacoplacites
 * Piriclymenia

Pl

 * Placenticeras
 * Placites
 * Planammatoceras
 * Planisphinctes
 * Plasmatoceras
 * Platotropites
 * Platyclymenia
 * Platycuccoceras
 * Platygoniatites
 * Platylenticeras
 * Platynoticeras
 * Platypleuroceras
 * Playfordites
 * Plesiacanthoceras
 * Plesiacanthoides
 * Plesiohamites
 * Plesiospitidiscus
 * Plesiotissotia
 * Plesioturrilites
 * Pleuroacanthites
 * Pleurocephalites
 * Pleuroceras
 * Pleurodistichites
 * Pleurohoplites
 * Pleurolytoceras
 * Pleuronodoceras
 * Pleuropinacoceras
 * Pleurotexanites
 * Pleydellia
 * Plictetia

Po

 * Poculisphinctes
 * Poecilomorphus
 * Polaricyclus
 * Politoceras
 * Polonites
 * Polonoceras
 * Polymorphites
 * Polyplectites
 * Polyplectus
 * Polyptychites
 * Polyptychoceras
 * Polysphinctes
 * Pomerania
 * Pompeckioceras
 * Pompeckjites
 * Ponteixites
 * Ponticeras
 * Popanites
 * Popanoceras
 * Poporites
 * Porpoceras
 * Postglatziella
 * Posttornoceras

Pr

 * Praebigotites
 * Praedaraelites
 * Praeglyphioceras
 * Praemanambolites
 * Praemeroceras
 * Praemuniericeras
 * Praeparkinsonia
 * Praepolyplectus
 * Praesphaeroceras
 * Praestrigites
 * Praetollia
 * Pravitoceras
 * Preflorianites
 * Preflorianitoides
 * Prenkites
 * Preshumardites
 * Presimoceras
 * Pricella
 * Prionites
 * Prionoceras
 * Prionocycloceras
 * Prionocyclus
 * Prionodoceras
 * Proarcestes
 * Proavites
 * Probeloceras
 * Procarnites
 * Procerites
 * Procerozigzag
 * Procheloniceras
 * Prochorites
 * Procladiscites
 * Procliviceras
 * Procolumbites
 * Procraspedites
 * Prodactylioceras
 * Prodeshayesites
 * Prodromites
 * Progalbanites
 * Progeronia
 * Progonoceratites
 * Progonioclymenia
 * Prograyiceras
 * Proharpoceras
 * Prohauericeras
 * Prohecticoceras
 * Prohelicoceras
 * Prohungarites
 * Prohysteroceras
 * Projuvavites
 * Prolecanites
 * Proleopoldia
 * Proleymeriella
 * Prolobites
 * Prolyelliceras
 * Promantelliceras
 * Promicroceras
 * Proniceras
 * Pronoetlingites
 * Pronorites
 * Propectinatites
 * Properisphinctes
 * Properrinites
 * Propinacoceras
 * Proplacenticeras
 * Proplanulites
 * Propopanoceras
 * Proptychites
 * Proptychitoides
 * Prorasenia
 * Prorsisphinctes
 * Prosaphites
 * Proshumardites
 * Prosiceras
 * Prososphinctes
 * Prososphinctoides
 * Prosphingites
 * Prostacheoceras
 * Protacanthoceras
 * Protacanthodiscus
 * Protacanthoplites
 * Protaconeceras
 * Protactoclymenia
 * Protanclyoceras
 * Protanisoceras
 * Protengonoceras
 * Protetragonites
 * Proteusites
 * Protexanites
 * Prothalassoceras
 * Protimanites
 * Protocanites
 * Protoceras
 * Protoecotrausites
 * Protogrammoceras
 * Protohoplites
 * Protophites
 * Protoplatytes
 * Protopopanoceras
 * Protornoceras
 * Protosageceras
 * Protothurmannia
 * Prototoceras
 * Protoxyclymenia
 * Protrachyceras
 * Protropites
 * Proturrilitoides
 * Prouddenites
 * Provirgatites

Ps

 * Pseudacompsoceras
 * Pseudaetomoceras
 * Pseudagathiceras
 * Pseudammatoceras
 * Pseudargentiniceras
 * Pseudarietites
 * Pseudarisphinctes
 * Pseudaspidites
 * Pseudaspidoceras
 * Pseudharpoceras
 * Pseudhelicoceras
 * Pseudhimalayites
 * Pseudinvoluticeras
 * Pseudoaganides
 * Pseudoaspidoceras
 * Pseudobactrites
 * Pseudobaculites
 * Pseudobarroisiceras
 * Pseudobrightia
 * Pseudocadoceras
 * Pseudocalycoceras
 * Pseudocardioceras
 * Pseudocarnites
 * Pseudoceltites
 * Pseudoclambites
 * Pseudoclydoniceras
 * Pseudoclymenia
 * Pseudocosmoceras
 * Pseudodanubites
 * Pseudofavrella
 * Pseudoflemingites
 * Pseudofoordites
 * Pseudogarantiana
 * Pseudogarnieria
 * Pseudogastrioceras
 * Pseudoglaphyrites
 * Pseudogrammoceras
 * Pseudogregoryceras
 * Pseudohalorites
 * Pseudohaploceras
 * Pseudoinvoluticeras
 * Pseudojacobites
 * Pseudokatroliceras
 * Pseudokossmaticeras
 * Pseudokymatites
 * Pseudoleymeriella
 * Pseudolillia
 * Pseudolioceras
 * Pseudolissoceras
 * Pseudomercaticeras
 * Pseudoneoptychites
 * Pseudonomismoceras
 * Pseudoosterella
 * Pseudopallasiceras
 * Pseudoparalegoceras
 * Pseudopeltoceras
 * Pseudoperisphinctes
 * Pseudophyllites
 * Pseudoplacenticeras
 * Pseudopolyplectus
 * Pseudoppelia
 * Pseudoprobeloceras
 * Pseudopronorites
 * Pseudopuzosia
 * Pseudosageceras
 * Pseudosaynella
 * Pseudoschistoceras
 * Pseudoschloenbachia
 * Pseudosimoceras
 * Pseudosirenites
 * Pseudosonneratia
 * Pseudosubplanitoides
 * Pseudothetidites
 * Pseudothurmannia
 * Pseudotibetites
 * Pseudotirolites
 * Pseudotissotia
 * Pseudotoceras
 * Pseudotoites
 * Pseudotropites
 * Pseudovidrioceras
 * Pseudovirgatites
 * Pseudowaagenia
 * Pseudoxybeloceras
 * Pseuduptonia
 * Psiloceras
 * Psilocladiscites
 * Psilohamites
 * Psilophyllites
 * Psilosturia
 * Psilotissotia

Pt

 * Pterolytoceras
 * Pteroscaphites
 * Pterosirenites
 * Ptycharcestes
 * Ptychites
 * Ptychoceras
 * Ptycholytoceras
 * Ptychophylloceras

Pu

 * Puchenquia
 * Puebloites
 * Pulchellia
 * Putealiceras
 * Puzosia
 * Puzosigella

Q

 * Qiannanites
 * Quasicravenoceras
 * Quasintoceras
 * Quenstedtoceras
 * Quinnites
 * Quitmannites

R



 * Radstockiceras
 * Raimondiceras
 * Rakusites
 * Ramosites
 * Rasenia
 * Rasenoides
 * Raymondiceras
 * Rectoclymenia
 * Reesidites
 * Rehmannia
 * Reiflingites
 * Reineckeia
 * Reineckeites
 * Renites
 * Renziceras
 * Repossia
 * Reticuloceras
 * Retites
 * Reynesella
 * Reynesoceras
 * Reynesocoeloceras
 * Rhabdoceras
 * Rhacophyllites
 * Rhadinites
 * Rhaeboceras
 * Rhampidoceras
 * Rhiphaeoclymenia
 * Rhiphaeocyclus
 * Rhymmoceras
 * Rhytidohoplites
 * Riasanites
 * Richardsonites
 * Rimkinites
 * Ringsteadia
 * Roinghites
 * Rollerites
 * Rollieria
 * Roloboceras
 * Romaniceras
 * Romanites
 * Ropoloceras
 * Rossalites
 * Rotodiscoceras
 * Rotopericyclus
 * Rubroceras
 * Rugiferites
 * Rursiceras
 * Rusoceras
 * Ryugasella

Sa

 * Sageceras
 * Sagenites
 * Saghalinites
 * Sakhaites
 * Sakmarites
 * Salaziceras
 * Salfeldiella
 * Saltericeras
 * Salterites
 * Sandbergeroceras
 * Sandlingites
 * Sangzhites
 * Sanmartinoceras
 * Sanyangites
 * Sarasinella
 * Saxoceras
 * Saynella
 * Saynoceras

Sc

 * Scalarites
 * Scaphamites
 * Scaphites
 * Scaphitodites
 * Scarburgiceras
 * Schaffhauseria
 * Schartymites
 * Schindewolfites
 * Schindewolfoceras
 * Schistoceras
 * Schistophylloceras
 * Schloenbachia
 * Schlotheimia
 * Schuichengoceras
 * Schwandorfia
 * Sciponoceras
 * Schizoclymenia
 * Scoticardioceras

Se

 * Sellaclymenia
 * Sellagoniatites
 * Sellanarcestes
 * Selwynoceras
 * Semenovites
 * Semiformiceras
 * Semiornites
 * Serpianites
 * Serramanticoceras
 * Seymourites

Sh

 * Shahrudites
 * Shakraceras
 * Shangraoceras
 * Shaoyangoceras
 * Sharpeiceras
 * Shasticrioceras
 * Shastoceras
 * Shengoceras
 * Shikhanites
 * Shirbuirnia
 * Shouchangoceras
 * Shumardites

Si

 * Siberiptychites
 * Sibirites
 * Sibyllites
 * Sicanites
 * Sicilioceras
 * Siculites
 * Siemiradzkia
 * Sigaloceras
 * Silberlingites
 * Silenticeras
 * Silesites
 * Silesitoides
 * Simaspidoceras
 * Simbirskites
 * Simichelloceras
 * Simmoceras
 * Simoceras
 * Simocosmoceras
 * Simonyceras
 * Simosphinctes
 * Simotoichites
 * Sindeites
 * Sinotites
 * Sinzovia
 * Sirenites
 * Sirenotrachyceras
 * Sivajiceras
 * Sizilites

Sk

 * Skirroceras
 * Skolekostephanus

Sl

 * Slatterites

So

 * Sobolewia
 * Sohlites
 * Sokolovites
 * Solenoceras
 * Solgerites
 * Soliclymenia
 * Somaliceras
 * Somalites
 * Somoholites
 * Sonneratia
 * Sonninia
 * Sornayceras
 * Sosioceras
 * Sowerbyceras

Sp

 * Spathiceras
 * Spathites
 * Speetoniceras
 * Sphaeroceras
 * Sphaerocladiscites
 * Sphaerocoeloceras
 * Sphaerodomites
 * Sphaeromanticoceras
 * Sphaeroptychius
 * Sphenarpites
 * Sphenoclymenia
 * Sphenodiscus
 * Sphingites
 * Spinammatoceras
 * Spinokosmoceras
 * Spinoleiophyllites
 * Spiroceras
 * Spirogmoceras
 * Spirolegoceras
 * Spiticeras
 * Spitidiscus
 * Sporadoceras

St

 * Stacheites
 * Stacheoceras
 * Stantonoceras
 * Stantonites
 * Staufenia
 * Stegoxyites
 * Stehnocephalites
 * Steinmannites
 * Stemmatoceras
 * Stenarcestes
 * Stenocadoceras
 * Stenoclymenia
 * Stenocyclus
 * Stenoglaphyrites
 * Stenopharciceras
 * Stenopopanoceras
 * Stenopronorites
 * Stephanites
 * Stephanoceras
 * Stikinoceras
 * Stoliczkaia
 * Stolleites
 * Stomohamites
 * Stoppaniceras
 * Streblites
 * Strebliticeras
 * Strenoceras
 * Striatosirenites
 * Strigoceras
 * Strigogoniatites
 * Strungia
 * Sturia
 * Styracoceras
 * Styrites

Su

 * Subalpinites
 * Subarcthoplites
 * Subastieria
 * Subbarroisiceras
 * Subbonarellia
 * Subcollina
 * Subcolumbites
 * Subcraspedites
 * Subdichotomoceras
 * Subgrossouvria
 * Subinyoites
 * Subitoceras
 * Subkossmatia
 * Sublithacoceras
 * Sublunuloceras
 * Submantelliceras
 * Submeekoceras
 * Submortoniceras
 * Subnebrodites
 * Subneumayria
 * Subolenekites
 * Suboosterella
 * Subperrinites
 * Subplanites
 * Subprionocyclus
 * Subpulchellia
 * Subsaynella
 * Subshumardites
 * Substeueroceras
 * Substreblites
 * Subthurmannia
 * Subtissotia
 * Subvertebriceras
 * Subvishnuites
 * Sudeticeras
 * Sulciferites
 * Sulcimitoceras
 * Sulcoclymenia
 * Sulcodimorphoceras
 * Sulcogirtyoceras
 * Sulcohamites
 * Sulcohamitoides
 * Sulcohoplites
 * Sundaites
 * Sunites
 * Surenites
 * Sutneria

Sv

 * Svalbardiceras
 * Sverdrupites
 * Svetlanoceras

Sy

 * Sympolycyclus
 * Synartinskia
 * Syngastrioceras
 * Synpharciceras
 * Synuraloceras
 * Synwocklumeria
 * Syrdenites

Ta

 * Tabantalites
 * Taffertia
 * Talenticeras
 * Tamarites
 * Tapashanites
 * Taramelliceras
 * Tardeceras
 * Tarrantoceras
 * Taskanites
 * Tauroceras

Te

 * Tectiretites
 * Tegoceras
 * Teicherticeras
 * Telermoceras
 * Teloceras
 * Telodactylites
 * Telodactylus
 * Temnoptychites
 * Terektites
 * Teshioites
 * Tetragonites (syn. Epigoniceras)
 * Tetrahoplites
 * Tetrahoplitoides
 * Tetraspidoceras
 * Texanites
 * Texoceras

Th

 * Thallassoceras
 * Thambites
 * Thamboceras
 * Thanamites
 * Theganoceras
 * Thetidites
 * Thisbites
 * Thomasites
 * Thomelites
 * Thorsteinssonoceras
 * Thraxites
 * Thurmannia
 * Thurmanniceras

Ti

 * Tibetites
 * Ticinites
 * Tiltoniceras
 * Timanites
 * Timanoceras
 * Timorites
 * Tirolites
 * Tissotia
 * Titanites
 * Tithopeltoceras

Tj

 * Tjururpites

Tm

 * Tmaegoceras
 * Tmaegophioceras
 * Tmetoceras

To

 * Tokurites
 * Tollia
 * Tolypeceras
 * Tompophiceras
 * Tongluceras
 * Tongoboroceras
 * Tonoceras
 * Torcapella
 * Toricellites
 * Torleyoceras
 * Tornia
 * Tornoceras
 * Tornquisites
 * Tornquistites
 * Torquatisphinctes
 * Tovebirkelundites
 * Toxamblyites
 * Toxolioceras
 * Tozerites

Tr

 * Trachybaculites
 * Trachyceras
 * Trachylytoceras
 * Trachyphyllites
 * Trachypleuraspidites
 * Trachysagenites
 * Trachyscaphites
 * Trachystenoceras
 * Tragodesmoceras
 * Tragodesmoceroides
 * Tragolytoceras
 * Tragophylloceras
 * Tragorhacoceras
 * Transicoeloceras
 * Traskites
 * Trenerites
 * Treptocceras
 * Trettinoceras
 * Triaclymenia
 * Triagolytoceras
 * Triainoceras
 * Tridentites
 * Trigonogastrioceras
 * Trilobiticeras
 * Trimanticoceras
 * Trimarginia
 * Trimarginites
 * Triozites
 * Tritropidoceras
 * Trizonoceras
 * Trochleiceras
 * Trochoclymenia
 * Trochoceras
 * Trolliceras
 * Tropaeum
 * Tropiceltites
 * Tropidoceras
 * Tropigastrites
 * Tropigymnites
 * Tropites
 * Tropitoides
 * Truyolsoceras

Ts

 * Tsvetkovites

Tu

 * Tuberodiscoides
 * Tugurites
 * Tulites
 * Tumaroceras
 * Tumilites
 * Tunesites
 * Tunglanites
 * Turrilites
 * Turrilitoides

Ty

 * Tympanoceras
 * Tyrannites

U



 * Uchtites
 * Uddenites
 * Uddenoceras
 * Ugamites
 * Uhligella
 * Uhligia
 * Uhligites
 * Umbetoceras
 * Umiaites
 * Unipeltoceras
 * Unquatornoceras
 * Uptonia
 * Urakawites
 * Uraloceras
 * Uraloclymenia
 * Uralopronorites
 * Ussuria
 * Ussurites
 * Utaturiceras

V



 * Vacekia
 * Valanginites
 * Valdedorsella
 * Valentolytoceras
 * Vallites
 * Vandaites
 * Vascoceras
 * Vavilovites
 * Velebites
 * Veleziceras
 * Venezoliceras
 * Verancoceras
 * Vermiceras
 * Vermisphinctes
 * Verneuilites
 * Vertebriceras
 * Vertebrites
 * Veveysiceras
 * Vicininodiceras
 * Vickohlerites
 * Vidrioceras
 * Villania
 * Vinalesites
 * Vinalesphinctes
 * Virgataxioceras
 * Virgatites
 * Virgatopavlovia
 * Virgatomorphites
 * Virgatosimoceras
 * Virgatosphinctes
 * Virgatospinctoides
 * Vishnuites
 * Voehringerites
 * Vredenburgites

W



 * Waagenina
 * Waagenoceras
 * Waehneroceras
 * Wagnericeras
 * Waldthausenites
 * Wangoceras
 * Wasatchites
 * Watinoceras
 * Wedekindella
 * Wellerites
 * Wellsites
 * Welterites
 * Werneroceras
 * Wewokites
 * Wheatleyites
 * Whitbyiceras
 * Whynoticeras
 * Wichmanniceras
 * Wiedeyoceras
 * Winchelloceras
 * Windhauseniceras
 * Winslowoceras
 * Whynoticeras
 * Wintonia
 * Witchellia
 * Wocklumeria
 * Wopfingites
 * Wordieoceras
 * Worthoceras
 * Wrightoceras
 * Wyomingites

X

 * Xenoceltites
 * Xenocephalites
 * Xenodiscus
 * Xenodrepanites
 * Xipheroceras
 * Xiphogymnites

Y

 * Yabeiceras
 * Yakounia
 * Yakutoceras
 * Yakutoglaphyrites
 * Yangites
 * Yezoites
 * Yinoceras
 * Yokoyamaceras

Z



 * Zadelsdorfia
 * Zaraiskites
 * Zealandites
 * Zemistephanus
 * Zenoites
 * Zenostephanus
 * Zephyroceras
 * Zetoceras
 * Zigzagiceras
 * Ziyunites
 * Zonovia
 * Zuercherella
 * Zugodactylites
 * Zugokosmoceras
 * Zuluiceras
 * Zuluscaphites
 * Zurcherella
 * Zurcheria