List Of Prehistoric Nautiloid Genera

This list of nautiloids is a comprehensive listing of all genera that have ever been included in the subclass Nautiloidea, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, 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 nautiloids.

Most of the listed genera are found in Part K of the ''Treatise on Invertebrate Paleontology''. Some, added since the year of publication (1964) are found simply in various scientific journals and special publications. The named genera are based on type specimens which are housed in various museums and other academic institutions worldwide, available to interested researchers.

Note that '' Allonautilus'' and '' Nautilus'' are the only extant genera.

A

*†'' Acanthonautilus''
*†'' Acaroceras''
*†''Acleistoceras''
*†'' Acrosphaerorthoceras''
*†''Actinoceras''
*†''Actinomorpha''
*†''Adamsoceras''
*†'' Adeloceras''
*†''Adelphoceras''
*†'' Adnatoceras''
*†'' Aethiosolen''
*†'' Aethoceras''
*†'' Agrioceras''
*†'' Aigoceras''
*†'' Aipetoceras''
*†''Aipoceras''
*†'' Akroceras''
*†''Aktjubocheilus''
*†''Alaskoceras''
*†''Albertoceras''
*†'' Alethynoceras''
*†''Aletoceras''
*†'' Alexandronautilus''
*†'' Allanoceras''
*†'' Alloceras''
*†''Allotrioceras''
*†'' Allumettoceras''
*†'' Almaloceras''
*†'' Alpenoceras''
*†'' Aluveroceras''
*†'' Amphicyrtoceras''
*†'' Amsleroceras''
*†'' Anamesoceras''
*†'' Anaspyroceras''
*†'' Anastomoceras''
*†''Ancistroceras''
*†'' Andreioceras''
*†'' Anepheloceras''
*†'' Angaroceras''
*†''Angelinoceras''
*†'' Anglicornus''
*†'' Anglonautlis''
*†'' Anguloceras''
*†'' Anhuiceras''
*†''Ankyloceras''
*†'' Annoceras''
*†'' Anomaloceras''
*†'' Anomeioceras''
*†'' Anonymoceras''
*†'' Anoploceras''
*†'' Antacaroceras''
*†''Anthoceras''
*†'' Anthomorpha''
*†'' Antigyroceras''
*†'' Antiphragmoceras''
*†'' Antiplectoceras''
*†'' Antonoceras''
*†'' Aphelaeceras''
*†''Aphetoceras''
*†'' Aphractus''
*†'' Aphragmites''
*†'' Aphyctoceras''
*†'' Apioceras''
*†'' Aploceras''
*†'' Apocrinoceras''
*†'' Apogonoceras''
*†'' Apsidoceras''
*†'' Archiacoceras''
*†'' Argocheilus''
*†'' Arionoceras''
*†'' Arkoceras''
*†'' Arkonoceras''
*†''Armenoceras''
*†'' Arpaoceras''
*†'' Arterioceras''
*†''Arthrophyllum''
*†'' Articheilus''
*†'' Asaphiceras''
*†'' Asbestoceras''
*†'' Ascoceras''
*†'' Askeatonolucidum''
*†'' Astoceras''
*†''Asymptoceras''
*†'' Athanatoceras''
*†'' Atomoceras''
*†'' Atopoceras''
*†''Aturia''
*†'' Aturoidea''
*†''Augustoceras''
*†'' Aulaconautilus''
*†'' Aulametacoceras''
*†'' Austinoceras''
*†''Avilionella''
*†'' Avoceras''

B

*†''Bactroceras''
*†'' Badouceras''
*†''Baeopleuroceras''
*†'' Bakeroceras''
*†'' Balashovia''
*†'' Balticoceras''
*†''Baltoceras''
*†'' Bambusoceras''
*†'' Barnesoceras''
*†''Barrandeoceras''
*†''Bassleroceras''
*†'' Bastindoceras''
*†'' Bateroboceras''
*†''Bathmoceras''
*†'' Baykonaroceras''
*†''Beekmanoceras''
*†'' Belloceras''
*†'' Beloitoceras''
*†'' Bentoceras''
*†'' Bergoceras''
*†'' Bickmorites''
*†'' Bifoveoceras''
*†'' Billingsites''
*†'' Bistrialites''
*†''Bitaunioceras''
*†'' Blakeoceras''
*†'' Blastocerina''
*†'' Bodieceras''
*†'' Bodoceras''
*†'' Bogoslovskya''
*†'' Bohemites''
*†'' Bolloceras''
*†'' Brachycycloceras''
*†'' Brachydomoceras''
*†'' Bradfordoceras''
*†'' Brevicoceras''
*†'' Bridgeoceras''
*†'' Brodekoceras''
*†'' Broeggeroceras''
*†'' Buchanoceras''
*†'' Buehleroceras''
*†'' Burenoceras''
*†'' Buttsoceras''
*†'' Byronoceras''

C

*†'' Calchasiceras''
*†'' Calhounoceras''
*†'' Callaionautilus''
*†'' Calocyrtoceras''
*†''Cameroceras''
*†''Campbelloceras''
*†''Campendoceras''
*†'' Campyloceras''
*†'' Capriocornites''
*†'' Carbactinoceras''
*†'' Carinonautilus''
*†''Carlloceras''
*†'' Carotites''
*†'' Cartersoceras''
*†'' Caseoceras''
*†''Cassinoceras''
*†'' Casteroceras''
*†'' Catastroboceras''
*†'' Catoraphinoceras''
*†'' Catyrephoceras''
*†'' Cayogoceras''
*†'' Cayutoceras''
*†'' Cedarvilleoceras''
*†'' Celox''
*†''Cenoceras''
*†'' Centroceras''
*†'' Centrocyrtoceras''
*†'' Centrocyrtocerina''
*†'' Centrolitoceras''
*†'' Centroonoceras''
*†'' Centrorizoceras''
*†'' Centrotarphyceras''
*†'' Chabactoceras''
*†'' Chadwickoceras''
*†''Charactoceras''
*†'' Charactocerina''
*†''Chazyoceras''
*†'' Chepuloceras''
*†'' Chicagooceras''
*†''Chidleyenoceras''
*†'' Chisloceras''
*†'' Choanoceras''
*†'' Chouteauoceras''
*†'' Chrysoceras''
*†'' Chuticeras''
*†'' Cimonia''
*†'' Cinctoceras''
*†'' Clarkesvillia''
*†''Clarkoceras''
*†'' Clathroceras''
*†'' Clelandoceras''
*†'' Cliftonoceras''
*†'' Clinoceras''
*†'' Clionyssiceras''
*†''Clitendoceras''
*†''Clydonautilus''
*†''Clymenonautilus''
*†'' Clytoceras''
*†''Cochlioceras''
*†''Codoceras''
*†'' Coelocyrtoceras''
*†'' Coelogasteroceras''
*†'' Coloceras''
*†'' Columenoceras''
*†'' Comaroceras''
*†'' Condraoceras''
*†'' Conocerina''
*†'' Conostichoceras''
*†'' Conradoceras''
*†''Cooperoceras''
*†'' Copiceras''
*†'' Coralloceras''
*†'' Corbuloceras''
*†'' Cornuella''
*†'' Corysoceras''
*†'' Cosmonautilus''
*†''Cotteroceras''
*†'' Craftonoceras''
*†'' Cranoceras''
*†'' Crateroceras''
*†'' Cryptocycloceras''
*†'' Cryptorthoceras''
*†'' Ctenoceras''
*†'' Cumberloceras''
*†'' Cumingsoceras''
*†''Curtoceras''
*†''Cycloceras''
*†'' Cyclolituites''
*†''Cyclopites''
*†'' Cycloplectoceras''
*†'' Cyclostomiceras''
*†'' Cymatoceras''
*†'' Cymatonautilus''
*†'' Cyrtactinoceras''
*†'' Cyrthoceratites''
*†''Cyrtobaltoceras''
*†'' Cyrtoceras''
*†'' Cyrtoceratites''
*†'' Cyrtocerina''
*†'' Cyrtocheilus''
*†'' Cyrtogomphoceras''
*†'' Cyrtogomphus''
*†'' Cyrtonybyoceras''
*†'' Cyrtorizoceras''
*†'' Cyrtospyroceras''
*†'' Cyrtothoracoceras''

D

*†'' Dakeoceras''
*†'' Dalecarlioceras''
*†'' Danaoceras''
*†'' Danoceras''
*†'' Danzikoceras''
*†'' Dasbergoceras''
*†'' Dawsonoceras''
*†'' Dawsonocerina''
*†'' Deckeroceras''
*†'' Deiloceras''
*†'' Deinoceras''
*†'' Deiroceras''
*†'' Deltoceras''
*†'' Deltocymatoceras''
*†'' Deltoidonautilus''
*†'' Dentoceras''
*†'' Desioceras''
*†'' Devonocheilus''
*†''Diademoceras''
*†'' Diagoceras''
*†'' Diaphoroceras''
*†'' Diastoloceras''
*†'' Dictyoceras''
*†'' Dideroceras''
*†'' Diestoceras''
*†'' Digenuoceras''
*†'' Diodoceras''
*†''Diorugoceras''
*†'' Discitoceras''
*†'' Discoactinoceras''
*†''Discoceras''
*†'' Discosorus''
*†'' Dnestroceras''
*†'' Doleroceras''
*†'' Dolorthoceras''
*†''Domatoceras''
*†'' Dongshanoceras''
*†'' Dowlingoceras''
*†'' Drakonoceras''
*†'' Duerleyoceras''
*†'' Dunleithoceras''
*†'' Dwightoceras''
*†'' Dynatoceras''
*†'' Dyscritoceras''
*†'' Dzhinsetoceras''

E

*†'' Eburoceras''
*†'' Ecdyceras''
*†'' Ectenoceras''
*†''Ectenolites''
*†'' Ectocycloceras''
*†'' Ectocyrtoceras''
*†'' Edaphoceras''
*†'' Edenoceras''
*†'' Ehlersoceras''
*†'' Eichwaldoceras''
*†'' Eifeloceras''
*†'' Ekwanoceras''
*†'' Elaphoceras''
*†'' Eldroceras''
*†'' Eleusoceras''
*†'' Elkanoceras''
*†''Ellesmeroceras''
*†'' Ellinoceras''
*†'' Elpisoceras''
*†'' Elrodoceras''
*†'' Encoiloceras''
*†''Endoceras''
*†'' Endocycloceras''
*†'' Endodiscosorus''
*†'' Endolobus''
*†'' Endoplanoceras''
*†'' Endoplectoceras''
*†''Endorioceras''
*†'' Endostokesoceras''
*†'' Engorthoceras''
*†'' Enoploceras''
*†'' Entimoceras''
*†''Eoclarkoceras''
*†'' Eocyckistomiceras''
*†'' Eocyrtoceras''
*†'' Eodiaphragmoceras''
*†'' Eoectenolites''
*†'' Eorizoceras''
*†''Eosomichelinoceras''
*†'' Eothinoceras''
*†'' Eotrimeroceras''
*†'' Eotripteroceras''
*†'' Ephippioceras''
*†'' Ephippiorthoceras''
*†'' Epicymatoceras''
*†'' Epidomatoceras''
*†'' Epistroboceras''
*†''Eremoceras''
*†'' Eridites''
*†'' Eskimoceras''
*†'' Esopoceras''
*†''Estonioceras''
*†'' Euciphoceras''
*†'' Eucymatoceras''
*†'' Eudoceras''
*†'' Euloxoceras''
*†'' Euryrizoceras''
*†'' Eurystomites''
*†'' Eushantungoceras''
*†'' Eusthenoceras''
*†'' Eutrephoceras''
*†'' Evlanoceras''
*†'' Exochoceras''
*†'' Exocyrtoceras''

F

*†''Faberoceras''
*†''Fayettoceras''
*†'' Flowerites''
*†'' Floweroceras''
*†'' Foersteoceras''
*†'' Folioceras''
*†'' Foordiceras''
*†'' Franklinoceras''
*†'' Fremontoceras''
*†'' Fusicoceras''

G

*†'' Galtoceras''
*†'' Gangshanoceras''
*†'' Garryoceras''
*†''Gasconsoceras''
*†'' Gaspocyrtoceras''
*†'' Geisonoceras''
*†'' Geisonocerina''
*†'' Geisonoceroides''
*†'' Geitonoceras''
*†'' Georgina''
*†'' Germanonautilus''
*†''Glenisteroceras''
*†'' Glossoceras''
*†'' Glyptodendron''
*†''Goldringia''
*†'' Gomphoceras''
*†'' Gonatocyrtoceras''
*†''Gonioceras''
*†'' Gonionaedyceras''
*†'' Gonionautilus''
*†'' Gorbyoceras''
*†'' Gordonoceras''
*†'' Gorgonoceras''
*†'' Gouldoceras''
*†'' Graciloceras''
*†'' Graftonoceras''
*†'' Greenlandoceras''
*†''Grimsbyoceras''
*†''Grypoceras''
*†''Gryponautilus''
*†'' Grzegorzewskia''
*†'' Guangyuanoceras''
*†'' Guangyuanoceroides''
*†'' Gyroceras''
*†'' Gyronaedyceras''
*†'' Gzheloceras''

H

*†'' Hadoceras''
*†''Halloceras''
*†''Hardmanoceras''
*†'' Harrisoceras''
*†'' Haruspex''
*†''Haydenoceras''
*†'' Hebetoceras''
*†'' Hecatoceras''
*†'' Hedstroemoceras''
*†'' Helenites''
*†'' Heloceras''
*†'' Hemibeloitoceras''
*†''Hemichoanella''
*†'' Hemicosmorthoceras''
*†'' Hemiliroceras''
*†''Heminautilus''
*†'' Hemiphragmoceras''
*†'' Heracloceras''
*†''Hercoceras''
*†'' Hercocyrtoceras''
*†'' Hercoglossa''
*†'' Hercoglossoceras''
*†'' Herkimeroceras''
*†'' Hesperoceras''
*†'' Hexagonites''
*†'' Hexameroceras''
*†''Hindeoceras''
*†''Hipparionoceras''
*†'' Hiregiroceras''
*†'' Hoeloceras''
*†'' Holconautilus''
*†''Holmiceras''
*†''Homaloceras''
*†''Homoadelphoceras''
*†'' Huaiheceras''
*†'' Huanghuachangoceras''
*†'' Huiaihecerina''
*†'' Hunanoceras''
*†'' Hunyuenoceras''
*†'' Huronia''
*†''Huroniella''
*†'' Hysteroceras''

I

*†'' Inclytoceras''
*†'' Indonautilus''
*†'' Inversoceras''
*†'' Iowoceras''
*†'' Irianoceras''
*†'' Irinites''
*†'' Isorthoceras''

J

*†'' Jangziceras''
*†'' Jaregoceras''
*†'' Jasperoceras''
*†''Jiagouceras''
*†'' Joachimoceras''
*†'' Joldagiroceras''
*†'' Jolietoceras''
*†'' Jonesoceras''
*†'' Jovellania''
*†''Juvavionautilus''

K

*†''Kadaroceras''
*†'' Kallholnoceras''
*†''Karadzharoceras''
*†''Karoceras''
*†''Katageioceras''
*†'' Kayoceras''
*†'' Kentlandoceras''
*†'' Keraiaceras''
*†'' Kiaeroceras''
*†'' Kijoceras''
*†'' Kyminoceras''
*†'' Kinaschukoceras''
*†''Kindleoceras''
*†'' Kionoceras''
*†'' Kitatites''
*†'' Kladisoceras''
*†'' Knightoceras''
*†'' Kobyashiceras''
*†''Kochoceras''
*†'' Konglungenoceras''
*†'' Kophinoceras''
*†'' Kosovoceras''
*†'' Kotelnyoceras''
*†'' Krykyloceras''
*†'' Kummeloceras''
*†'' Kundoceras''
*†'' Kyminoceras''

L

*†''Lambeoceras''
*†'' Lamellorthoceras''
*†'' Landeroceras''
*†'' Laumontoceras''
*†''Laureloceras''
*†'' Lavaloceras''
*†'' Lawrenceoceras''
*†'' Lechritrochoceras''
*†'' Leonardoceras''
*†'' Leuroceras''
*†'' Leurocycloceras''
*†''Leurorthoceras''
*†'' Leurotrochoceras''
*†'' Levisoceras''
*†''Librovitschiceras''
*†'' Linstroemoceras''
*†'' Liroceras''
*†'' Lispoceras''
*†''Litoceras''
*†'' Litogyroceras''
*†''Lituites''
*†'' Llanoceras''
*†''Lobendoceras''
*†'' Loganoceras''
*†'' Lophoceras''
*†'' Lopingoceras''
*†'' Lorieroceras''
*†'' Lowoceras''
*†'' Loxoceras''
*†'' Lunanoceras''
*†'' Lychnoceras''
*†'' Lyckholmoceras''
*†'' Lyecoceras''
*†'' Lyrioceras''
*†'' Lysagoroceras''
*†'' Lysagoroceras''

M

*†'' Maccoyoceras''
*†''Macrodomoceras''
*†'' Macroloxoceras''
*†'' Madiganella''
*†'' Maelonoceras''
*†'' Magdoceras''
*†'' Mahoningoceras''
*†'' Mandaloceras''
*†''Manitoulinoceras''
*†'' Manjoceras''
*†'' Mariceras''
*†''Mcqueenoceras''
*†''Mecynoceras''
*†''Megadisocosorus''
*†'' Megaglossoceras''
*†''Megaloceras''
*†'' Meikeloceras''
*†'' Meitanoceras''
*†'' Meloceras''
*†''Meniscoceras''
*†'' Menuthionautlis''
*†'' Mericoceras''
*†'' Mesaktoceras''
*†'' Mesnaquaceras''
*†'' Mesoceras''
*†'' Mesochasmoceras''
*†'' Metabaltoceras''
*†'' Metacoceras''
*†'' Metactinoceras''
*†'' Metaphragmoceras''
*†'' Metarizoceras''
*†'' Metarmenoceras''
*†'' Metaspyroceras''
*†'' Metastromatoceras''
*†'' Metephippiorthoceras''
*†'' Metrioceras''
*†'' Miamoceras''
*†''Michelinoceras''
*†''Microbaltoceras''
*†'' Micronoceras''
*†'' Millkoninckioceras''
*†'' Mimolychnoceras''
*†''Minganoceras''
*†'' Mitorthoceras''
*†'' Mitroceras''
*†'' Mixosiphonoceras''
*†'' Mjandymoceras''
*†'' Mnemoceras''
*†'' Mojscaroceras''
*†'' Mongoceras''
*†'' Monocyrtoceras''
*†'' Monogonoceras''
*†'' Monomuchites''
*†'' Montyoceras''
*†'' Mooreoceras''
*†'' Moreauoceras''
*†'' Mosquoceras''
*†'' Mstikhinoceras''
*†'' Muiroceras''
*†'' Multicameroceras''
*†'' Murchisoniceras''
*†'' Muriceras''
*†'' Murrayoceras''
*†'' Myloceras''
*†'' Mysterioceras''

N

*†'' Naedyceras''
*†''Najaceras''
*†''Nanno''
*†'' Nassauoceras''
*†'' Nautiloceras''
*†'' Nebroceras''
*†'' Neobistrialites''
*†'' Neoceras''
*†'' Neocycloceras''
*†'' Neocymatoceras''
*†'' Neodiscosorus''
*†'' Neodomatoceras''
*†'' Neorthoceras''
*†'' Neosichuanoceras''
*†'' Nephriticeras''
*†'' Nephriticerina''
*†''Neptunoceras''
*†'' Neumatoceras''
*†'' Nikenautilus''
*†'' Nipageroceras''
*†'' Nothoceras''
*†'' Notocycloceras''
*†'' Nucites''
*†''Nybyoceras''

O

*†'' Octamerella''
*†'' Oelandoceras''
*†'' Offleyoceras''
*†'' Ogygoceras''
*†'' Ohioceras''
*†''Oligoceras''
*†''Oncoceras''
*†'' Oneotoceras''
*†'' Onyxites''
*†'' Oocerina''
*†'' Oonoceras''
*†'' Ophidioceras''
*†'' Ophioceras''
*†'' Ophionautilus''
*†'' Oratoceras''
*†'' Ordosoceras''
*†''Ormoceras''
*†''Orthoceras''
*†'' Orthocycloceras''
*†'' Orthonybyoceras''
*†''Osbornoceras''
*†'' Ovoceras''
*†'' Ovocerina''
*†'' Oxfordoceras''
*†'' Oxygonioceras''
*†''Oxynautilus''

P

*†'' Pachendoceras''
*†'' Pachtoceras''
*†'' Pakrioceras''
*†'' Palaeocycloceras''
*†'' Palaskensis''
*†'' Palelialia''
*†'' Palmeroceras''
*†'' Pancornus''
*†'' Pantoioceras''
*†'' Paquettoceras''
*†'' Paracenoceras''
*†'' Paracleistoceras''
*†'' Paraconradoceras''
*†''Paractinoceras''
*†'' Paracyclostomiceras''
*†'' Paracymatoceras''
*†'' Paradakeoceras''
*†'' Paradiscoceras''
*†'' Paradnatoceras''
*†'' Paradomatoceras''
*†'' Parakionoceras''
*†'' Paraloxoceras''
*†'' Paramecynoceras''
*†'' Parametacoceras''
*†'' Paramooreoceras''
*†'' Paranautilus''
*†'' Parapalaeoceras''
*†'' Paraphragmites''
*†'' Paraplectronoceras''
*†'' Pararhiphaeoceras''
*†'' Pararineceras''
*†'' Parascoceras''
*†'' Parasphaerorthoceras''
*†'' Parastenopoceras''
*†'' Paratrematoceras''
*†'' Parawestonoceras''
*†'' Parevlanoceras''
*†'' Paroocerina''
*†'' Parormoceras''
*†'' Parryoceras''
*†'' Pectinoceras''
*†'' Peismoceras''
*†'' Pelagoceras''
*†'' Pentameroceras''
*†'' Perimecoceras''
*†'' Perioidanoceras''
*†'' Peripetoceras''
*†''Permoceras''
*†'' Permodomatoceras''
*†'' Permonautilus''
*†'' Perunautilus''
*†'' Petryoceras''
*†''Phacoceras''
*†'' Phaedrysmocheilus''
*†'' Phloioceras''
*†'' Phragmoceras''
*†'' Phragmocerina''
*†'' Phthanoncoceras''
*†'' Physioceras''
*†'' Pictetoceras''
*†'' Piersaloceras''
*†'' Pilotoceras''
*†'' Pionoceras''
*†'' Piratoceras''
*†'' Plagioceras''
*†'' Plagiostomoceras''
*†'' Planetoceras''
*†'' Platyconoceras''
*†'' Plectoceras''
*†'' Plectolites''
*†'' Pleuronautilus''
*†'' Pleuroncoceras''
*†'' Pleurorthoceras''
*†'' Plicatoceras''
*†'' Plummeroceras''
*†'' Podoliceras''
*†'' Polydesmia''
*†''Polyelasmoceras''
*†'' Polygrammoceras''
*†'' Poterioceras''
*†'' Poteriocerina''
*†'' Potoceras''
*†'' Pristeroceras''
*†'' Probillingsites''
*†'' Proclydonautilus''
*†'' Procymatoceras''
*†'' Projovellania''
*†'' Proteoceras''
*†''Proterocameroceras''
*†''Proterovaginoceras''
*†'' Protobactrites''
*†'' Protocycloceras''
*†'' Protokionoceras''
*†'' Protophragmoceras''
*†'' Pselioceras''
*†'' Pseudactinoceras''
*†'' Pseudaganides''
*†'' Pseudancistroceras''
*†'' Pseudaturoidea''
*†'' Pseudendoceras''
*†'' Pseudobolloceras''
*†'' Pseudobrevicoceras''
*†'' Pseudocatastroboceras''
*†''Pseudocenoceras''
*†'' Pseudocycloceras''
*†'' Pseudocyrtoceras''
*†'' Pseudogomphoceras''
*†''Pseudokionoceras''
*†''Pseudonautilus''
*†''Pseudophacoceras''
*†''Pseudophragmoceras''
*†''Pseudorthoceras''
*†''Pseudostenopoceras''
*†''Pseudotemnocheilus''
*†''Pseudotemperoceras''
*†''Pseudotitanoceras''
*†''Psiaoceras''
*†''Ptenoceras''
*†''Ptyssoceras''
*†''Purmanarcoceras''
*†''Pycnoceras''
*†''Pyramidoceras''
*†''Pythonoceras''

Q

*†''Qiushougouceras''
*†''Quebecoceras''

R

*†''Radoceras''
*†''Ramussenoceras''
*†''Rangeroceras''
*†''Raphanites''
*†''Tripteroceratidae, Rasmussenoceras''
*†''Rayonnoceras''
*†''Rectseptoceras''
*†''Redpathoceras''
*†''Reedsoceras''
*†''Reticycloceras''
*†''Rhabdiferoceras''
*†''Rhabdites''
*†''Rhadinoceras''
*†''Rhiphaeoceras''
*†''Rhiphaeonautilus''
*†''Rhipsites''
*†''Rhomboceras''
*†''Rhomboceras''
*†''Rhynchoceras''
*†''Rhynchorthoceras''
*†''Slender Oncoceratidae, Richardsonoceras''
*†''Rineceras''
*†''Graciloceratidae, Ringoceras''
*†''Rioceras''
*†''Rizoceras''
*†''Robsonoceras''
*†''Slender Oncoceratidae, Romingoceras''
*†''Ropaloceras''
*†''Roussanoffoceras''
*†''Protocycloceratidae, Rudolfoceras''
*†''Reudemannoceratidae, Ruedemannoceras''
*†''Ruthenoceras''
*†''Rutoceras''

S

*†''Sactoceras''
*†''Sactorthoceras''
*†''Saffordoceras''
*†''Savageoceras''
*†''Sceptrites''
*†''Schroederoceras''
*†''Schuchertoceras''
*†''Scofieldoceras''
*†''Scyphoceras''
*†''Tarphyceratidae, Seelyoceras''
*†''Selenoceras''
*†''Selkirkoceras''
*†''Shamattawaceras''
*†''Shantungendoceras''
*†''Shideleroceras''
*†''Shikhanoceras''
*†''Sholakoceras''
*†''Shumardoceras''
*†''Shuranoceras''
*†''Siberioceras''
*†''Siberionautilus''
*†''Sibyllonautilus''
*†''Sichuanaceras''
*†''Sigmocycloceras''
*†''Simardoceras''
*†''Simorthoceras''
*†''Simplicioceras''
*†''Sinclairoceras''
*†''Sinoceras''
*†''Sinolebetoceras''
*†''Slocomoceras''
*†''Smileoceras''
*†''Smithvilloceras''
*†''Soakinautilus''
*†''Solenochilus''
*†''Somalinautilus''
*†''Sophoceras''
*†''Spanioceras''
*†''Sphooceras''
*†''Sphyradoceras''
*†''Spondeioceras''
*†''Spyroceras''
*†''Stagonites''
*†''Standardoceras''
*†''Manitoulinoceras, Staufferoceras''
*†''Stearoceras''
*†''Stemtonoceras''
*†''Stenogomphoceras''
*†''Stenopoceras''
*†''Stenzeloceras''
*†''Stereoplasmoceras''
*†''Stereospyroceras''
*†''Stereotoceras''
*†''Phragmoceratidae, Sthenoceras''
*†''Stokesoceras''
*†''Stolbovoceras''
*†''Strandoceras''
*†''Streptoceras''
*†''Striacoceras''
*†''Strionautilus''
*†''Strobiloceras''
*†''Stroboceras''
*†''Stroggyloceras''
*†''Stromatoceras''
*†''Strophiceras''
*†''Styrionautilus''
*†''Subclymenia''
*†''Subspyroceras''
*†''Subvestinautilus''
*†''Suttonoceras''
*†''Sycoceras''
*†''Synetoceras''
*†''Syringonautilidae, Syringoceras''
*†''Syringonautilidae, Syringonautilus''
*†''Syrionautilus''
*†''Syrreghmatoceras''
*†''Lechritrochoceratidae, Systrophoceras''

T

*†''Tainionautilus''
*†''Tainoceras''
*†''Tajaroceras''
*†''Talattoceras''
*†''Tambegiroceras''
*†''Tanchiashanites''
*†''Tanycameroceras''
*†''Taoqupoceras''
*†''Tarphyceras''
*†''Tartaroceras''
*†''Taskanoceras''
*†''Taxyceras''
*†''Teichertia''
*†''Teichertoceras''
*†''Temnocheilus''
*†''Temperoceras''
*†''Tetragonoceras''
*†''Tetrameroceras''
*†''Tetranodoceras''
*†''Tetrapleuroceras''
*†''Thaymastoceras''
*†''Therioceras''
*†''Theskeloceras''
*†''Thoracoceras''
*†''Threaroceras''
*†''Thrincoceras''
*†''Thuringionautilus''
*†''Tienoceras''
*†''Tirolonautilus''
*†''Titanoceras''
*†''Tithonoceras''
*†''Tofangoceras''
*†''Tomponautilus''
*†''Torquatoceras''
*†''Trachynautilus''
*†''Tragoceras''
*†''Trematoceras''
*†''Trematodiscus''
*†''Tretoceras''
*†''Triboloceras''
*†''Trigonoceras''
*†''Trilacinoceras''
*†''Trimeroceras''
*†''Tripleuroceras''
*†''Triplooceras''
*†''Tripteroceratidae, Tripteroceras''
*†''Tripteroceratidae, Tripterocerina''
*†''Tripteroceroides''
*†''Trispectes''
*†''Tritonoceras''
*†''Trochoceras''
*†''Lechritrochoceratidae, Trochodictyoceras''
*†''Trocholites''
*†''Trocholitidae, Trocholitoceras''
*†''Troedssonella''
*†''Troedssonoceras''
*†''Troostoceras''
*†''Tshingizoceras''
*†''Phragmoceratidae, Tubiferoceras''
*†''Tumidoceras''
*†''Tumidonautilus''
*†''Tunguskoceras''
*†''Turnoceras''
*†''Turoceras''
*†''Lowoceratidae, Tuyloceras''
*†''Tylodiscoceras''
*†''Tylonautilus''
*†''Tylorthoceras''
*†''Tyrioceras''

U

*†''Ukhtoceras''
*†''Uloceras''
*†''Ulrichoceras''
*†''Mandaloceratidae, Umbeloceras''
*†''Ungulites''
*†''Uralorthoceras''
*†''Uranoceras''
*†''Urtasymoceras''

V

*†''Valcouroceras''
*†''Valhallites''
*†''Valhalloceras''
*†''Vasalemmoceras''
*†''Vassaroceras''
*†''Vaupelia''
*†''Venatoroceras''
*†''Veneficoceras''
*†''Ventroloboceras''
*†''Vericeras''
*†''Verticoceras''
*†''Vertorhizoceras''
*†''Mandaloceratidae, Vespoceras''
*†''Vestinautilus''
*†''Virgaloceras''
*†''Virgoceras''

W

*†''Wadeoceras''
*†''Walcottoceras''
*†''Wardoceras''
*†''Weberoceras''
*†''Acaroceratidae, Weishanhuceras''
*†''Welleroceras''
*†''Wellsoceras''
*†''Westonoceras''
*†''Whiteavesites''
*†''Whitfieldoceras''
*†''Trocholitidae, Wichitoceras''
*†''Williamsoceras''
*†''Wilsonoceras''
*†''Winnipegoceras''
*†''Wissenbachia''
*†''Wolungoceras''
*†''Woosteroceras''
*†''Worthenoceras''
*†''Wutinoceras''

X

*†''Xainzanoceras''
*†''Xenoceras''
*†''Xenocheilus''
*†''Xiaoshaoceras''
*†''Xiphoceras''

Y

*†''Yakutionautilus''

Z

*†''Zeehanoceras''
*†''Zerashanoceras''
*†''Zhuibianoceras''
*†''Zhuralevia''
*†''Zittelloceras''
*†''Zooceras''

References

* Uncited genera names can be attributed to Sepkoski (2002)
*

Sepkoski's Online Genus Database (CEPHALOPODA)

{{DEFAULTSORT:Nautiloids
Prehistoric nautiloid genera, List of
Lists of prehistoric molluscs
Lists of animal genera (alphabetic)