Opinions from V. N. Shimansky 1975
- 'Anglonautilus belongs to Nautilidae'
- 'Angulithes (Cimomia) schroederi is recombined as Cimomia schroederi'
- 'Angulithes (Cimomia) stoliczkai is recombined as Cimomia stoliczkai'
- 'Angulithes (Pseudocenoceras) dorsoplicatus is recombined as Pseudocenoceras dorsoplicatum'
- 'Angulithes vascogoticus is recombined as Deltoidonautilus vascogoticus'
- 'Aturoidea belongs to Hercoglossidae'
- 'Aulaconautilus belongs to Pseudonautilidae'
- 'Aulaconautilus druzczici belongs to Aulaconautilus'
- 'Cimomia belongs to Hercoglossidae'
- 'Cimomia tenuicosta belongs to Cimomia'
- 'Cymatoceras belongs to Nautilidae'
- 'Cymatoceras bifidum belongs to Cymatoceras'
- 'Cymatoceras karakaschi belongs to Cymatoceras'
- 'Cymatoceras pulchrum belongs to Cymatoceras'
- 'Cymatoceras renngarteni belongs to Cymatoceras'
- 'Cymatoceras sarysuense belongs to Cymatoceras'
- 'Cymatoceras savelievi belongs to Cymatoceras'
- 'Cymatoceras yabei belongs to Cymatoceras' according to Ozaki and Katto 1956
- 'Cymatoceras yabei belongs to Cymatoceras'
- 'Deltocymatoceras belongs to Nautilidae'
- 'Deltoidonautilus belongs to Hercoglossidae'
- 'Enclimatoceras is a subjective synonym of Hercoglossa'
- 'Epicymatoceras belongs to Nautilidae'
- 'Epicymatoceras monstrum belongs to Epicymatoceras'
- 'Eucymatoceras belongs to Nautilidae'
- 'Eutrephoceras belongs to Nautilidae'
- 'Eutrephoceras alcesense belongs to Eutrephoceras'
- 'Eutrephoceras angolaense belongs to Eutrephoceras'
- 'Eutrephoceras blanki belongs to Eutrephoceras'
- 'Eutrephoceras burundukhajense belongs to Eutrephoceras'
- 'Eutrephoceras decorum belongs to Eutrephoceras'
- 'Eutrephoceras donbassicum belongs to Eutrephoceras'
- 'Eutrephoceras hacobjani belongs to Eutrephoceras' according to Shimansky 1974
- 'Eutrephoceras hacobjani belongs to Eutrephoceras'
- 'Eutrephoceras insigne belongs to Eutrephoceras'
- 'Eutrephoceras kummeli belongs to Eutrephoceras'
- 'Eutrephoceras merteni belongs to Eutrephoceras'
- 'Eutrephoceras moskvini belongs to Eutrephoceras'
- 'Eutrephoceras municeps belongs to Eutrephoceras'
- 'Eutrephoceras planoventer belongs to Eutrephoceras'
- 'Eutrephoceras simile belongs to Eutrephoceras'
- 'Eutrephoceras spengleri belongs to Eutrephoceras'
- 'Eutrephoceras uzense belongs to Eutrephoceras'
- 'Heminautilus belongs to Nautilidae'
- 'Hercoglossa belongs to Hercoglossidae'
- 'Hercoglossa alpanensis belongs to Hercoglossa' according to Rouchadze 1938
- 'Hercoglossa alpanensis is recombined as Palelialia alpanensis'
- 'Hercoglossa asiatica belongs to Hercoglossa'
- 'Hercoglossa danica indica is recombined as Hercoglossa indica'
- 'Hercoglossa imerica belongs to Hercoglossa' according to Rouchadze 1938
- 'Hercoglossa imerica is recombined as Palelialia imerica'
- 'Hercoglossa ludevigi belongs to Hercoglossa' according to Potonie 1925
- 'Hercoglossa ludevigi is recombined as Cymatoceras ludevigi'
- 'Hercoglossidae belongs to Nautilaceae'
- 'Lissoniceras is a subjective synonym of Deltoidonautilus'
- 'Nautilidae belongs to Nautilaceae'
- 'Nautilus (Cymatoceras) carlottensis belongs to Nautilus (Cymatoceras)' according to Whiteaves 1900
- 'Nautilus (Cymatoceras) carlottensis is recombined as Cymatoceras carlottense'
- 'Nautilus (Cymatoceras) kossmati is recombined as Cymatoceras kossmati'
- 'Nautilus (Cymatoceras) pseudonegama is recombined as Cymatoceras pseudonegama'
- 'Nautilus (Cymatoceras) semilobatus is recombined as Cymatoceras semilobatum'
- 'Nautilus (Hercoglossa) tamulicus belongs to Nautilus (Hercoglossa)' according to Kossmat 1897
- 'Nautilus (Hercoglossa) tamulicus is recombined as Teichertia tamulicus'
- 'Nautilus ahltenensis is recombined as Eutrephoceras ahltenense'
- 'Nautilus albensis belongs to Nautilus' according to d'Orbigny 1850
- 'Nautilus albensis is recombined as Cymatoceras albense'
- 'Nautilus applanatus is recombined as Pseudocenoceras applanatum'
- 'Nautilus archiacianus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus archiacianus is recombined as Pseudocenoceras archiacianum'
- 'Nautilus arcuatus is recombined as Deltoidonautilus arcuatus'
- 'Nautilus astierianus is recombined as Eutrephoceras astierianum'
- 'Nautilus atlas belongs to Nautilus' according to Whiteaves 1876
- 'Nautilus atlas is recombined as Cymatoceras atlas'
- 'Nautilus bellerophon belongs to Nautilus' according to Lundgren 1867
- 'Nautilus bellerophon is recombined as Eutrephoceras bellerophon'
- 'Nautilus bifurcatum belongs to Nautilus' according to Ooster 1858
- 'Nautilus bifurcatum is recombined as Cymatoceras bifurcatum'
- 'Nautilus bouchardianus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus bouchardianus is recombined as Eutrephoceras bouchardianum'
- 'Nautilus campbelli belongs to Nautilus' according to Meek 1861
- 'Nautilus campbelli is recombined as Eutrephoceras campbelli'
- 'Nautilus campichei belongs to Nautilus' according to Karakasch 1907
- 'Nautilus campichei is recombined as Pseudocenoceras campichei'
- 'Nautilus charpentieri is recombined as Eutrephoceras charpentieri'
- 'Nautilus clementinus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus clementinus is recombined as Eutrephoceras clementinum'
- 'Nautilus columbinus is recombined as Eutrephoceras columbinum'
- 'Nautilus crebricostatus is recombined as Cymatoceras crebricostatum'
- 'Nautilus danicus belongs to Nautilus' according to Schlotheim 1820
- 'Nautilus danicus is recombined as Hercoglossa danica'
- 'Nautilus darupensis belongs to Nautilus' according to Schluter 1876
- 'Nautilus darupensis is recombined as Eutrephoceras darupense'
- 'Nautilus dekayi is recombined as Eutrephoceras dekayi'
- 'Nautilus depressus is recombined as Eutrephoceras depressum'
- 'Nautilus desertorum belongs to Nautilus' according to Zittel 1902
- 'Nautilus desertorum is recombined as Cimomia desertorus'
- 'Nautilus deslongchampsianus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus deslongchampsianus is recombined as Cymatoceras deslongchampsianum'
- 'Nautilus eichwaldi belongs to Nautilus' according to Karakasch 1907
- 'Nautilus eichwaldi is recombined as Cymatoceras eichwaldi'
- 'Nautilus elegans belongs to Nautilus' according to Sowerby 1816
- 'Nautilus elegans is recombined as Cymatoceras elegans'
- 'Nautilus expansus is recombined as Eutrephoceras expansum'
- 'Nautilus fittoni belongs to Nautilus' according to Sharpe 1853
- 'Nautilus fittoni is recombined as Pseudocenoceras fittoni'
- 'Nautilus flammeus is recombined as Eutrephoceras flammeum'
- 'Nautilus flammeus belongs to Nautilus' according to Ronchetti 1947
- 'Nautilus fleuriausianus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus fleuriausianus is recombined as Deltoidonautilus fleuriausianus'
- 'Nautilus forbesianus belongs to Nautilus' according to Blanford 1861
- 'Nautilus forbesianus is recombined as Pseudaturoidea forbesianus'
- 'Nautilus galea is recombined as Deltoidonautilus galea'
- 'Nautilus galicianus belongs to Nautilus' according to Alth 1819
- 'Nautilus galicianus is recombined as Cimomia galicianus'
- 'Nautilus gosavicus is recombined as Cimomia gosavicus'
- 'Nautilus heberti is recombined as Cimomia heberti'
- 'Nautilus huxleyanus belongs to Nautilus' according to Blanford 1861
- 'Nautilus huxleyanus is recombined as Cymatoceras huxleyanum'
- 'Nautilus indicus is recombined as Eutrephoceras indicum'
- 'Nautilus jordani is recombined as Cimomia jordani'
- 'Nautilus justus is recombined as Eutrephoceras justum'
- 'Nautilus karpinskyi belongs to Nautilus' according to Karakasch 1907
- 'Nautilus karpinskyi is recombined as Palelialia karpinskyi'
- 'Nautilus kayeanus is recombined as Cymatoceras kayeanum'
- 'Nautilus laevigatus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus laevigatus is replaced by Eutrephoceras sublaevigatum'
- 'Nautilus lallierianus belongs to Nautilus' according to d'Orbigny 1841
- 'Nautilus lallierianus is recombined as Heminautilus lallierianus'
- 'Nautilus largilliertianus is recombined as Pseudocenoceras largilliertianum'
- 'Nautilus leiotropis is recombined as Deltocymatoceras leiotropis'
- 'Nautilus lentiformis is recombined as Eutrephoceras lentiforme'
- 'Nautilus montanaensis is recombined as Eutrephoceras montanaense'
- 'Nautilus montmollini belongs to Nautilus' according to Pictet and Campiche 1859
- 'Nautilus montmollini is recombined as Eutrephoceras montmollini'
- 'Nautilus neckerianus belongs to Nautilus' according to Picete 1947
- 'Nautilus neckerianus is recombined as Cymatoceras neckerianum'
- 'Nautilus negama is recombined as Cymatoceras negama'
- 'Nautilus neocomiensis belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus neocomiensis is recombined as Cymatoceras neocomiense'
- 'Nautilus patens is recombined as Cymatoceras patens'
- 'Nautilus picteti belongs to Nautilus' according to Karakasch 1907
- 'Nautilus picteti is recombined as Cymatoceras picteti'
- 'Nautilus plicatus is recombined as Eucymatoceras plicatum'
- 'Nautilus plicatus belongs to Nautilus' according to Fitton 1835
- 'Nautilus pseudoelegans is recombined as Cymatoceras pseudoelegans'
- 'Nautilus quadrilineatus belongs to Nautilus' according to Favre 1869
- 'Nautilus quadrilineatus is recombined as Eutrephoceras quadrilineatum'
- 'Nautilus radiatus belongs to Nautilus' according to Sowerby 1822
- 'Nautilus radiatus is recombined as Cymatoceras radiatum'
- 'Nautilus requienianus belongs to Nautilus' according to d'Orbigny 1840
- 'Nautilus requienianus is a subjective synonym of Eucymatoceras plicatum'
- 'Nautilus sowerbyanus is recombined as Deltoidonautilus sowerbianus'
- 'Nautilus sphaericus is recombined as Eutrephoceras sphaericum'
- 'Nautilus splendens is recombined as Eutrephoceras splendens'
- 'Nautilus steveni belongs to Nautilus' according to Karakasch 1907
- 'Nautilus steveni is recombined as Eucymatoceras steveni'
- 'Nautilus stschurowskii belongs to Nautilus' according to Milaschevitch 1877
- 'Nautilus stschurowskii is recombined as Eucymatoceras stschurowskii'
- 'Nautilus subalbensis belongs to Nautilus' according to Sinzow 1913
- 'Nautilus subalbensis is recombined as Anglonautilus subalbensis'
- 'Nautilus subfleuriausianus is recombined as Eutrephoceras subfleuriausianum'
- 'Nautilus sublaevigatus belongs to Nautilus' according to d'Orbigny 1850
- 'Nautilus sublaevigatus is recombined as Eutrephoceras sublaevigatum'
- 'Nautilus subplicatus is recombined as Eutrephoceras subplicatum'
- 'Nautilus tskaltsithelensis belongs to Nautilus' according to Rouchadze 1931
- 'Nautilus tskaltsithelensis is recombined as Cymatoceras tskaltsithelense'
- 'Nautilus undulatus belongs to Nautilus' according to Sowerby 1813
- 'Nautilus undulatus is recombined as Anglonautilus undulatus'
- 'Nautilus varusensis belongs to Nautilus' according to d'Orbigny 1850
- 'Nautilus varusensis is recombined as Cymatoceras varusense'
- 'Nautilus vastus belongs to Nautilus' according to Kner 1850
- 'Nautilus vastus is recombined as Eutrephoceras vastum'
- 'Nautilus westphalicus is recombined as Deltoidonautilus westphalicus'
- 'Palelialia belongs to Pseudonautilidae'
- 'Paracymatoceras belongs to Nautilidae'
- 'Platynautilus is a subjective synonym of Heminautilus'
- 'Pseudaturoidea belongs to Hercoglossidae'
- 'Pseudocenoceras belongs to Nautilidae'
- 'Pseudocenoceras incautum belongs to Pseudocenoceras'
- 'Pseudocenoceras nomenclator belongs to Pseudocenoceras'
- 'Pseudocenoceras procerum belongs to Pseudocenoceras'
- 'Pseudocenoceras proximum belongs to Pseudocenoceras'
- 'Pseudocenoceras supervacuum belongs to Pseudocenoceras'
- 'Pseudocenoceras warsanofievie belongs to Pseudocenoceras' according to Shimansky 1951
- 'Pseudocenoceras xenium belongs to Pseudocenoceras'
- 'Pseudonautilidae belongs to Nautilaceae'
- 'Pseudonautilus belongs to Pseudonautilidae'
- 'Pseudonautilus ra belongs to Pseudonautilus'
- 'Syrionautilus paralibanoticus belongs to Syrionautilus' according to Shimansky 1961
- 'Syrionautilus paralibanoticus is recombined as Cymatoceras paralibanoticum'
- 'Teichertia belongs to Hercoglossidae'
- 'Teichertia imitator belongs to Teichertia' according to Shimansky 1959
- 'Teichertia imitator belongs to Teichertia'
- 'Teichertia similis belongs to Teichertia'
- 'Vorticoceras is a subjective synonym of Heminautilus'
- 'Woodringia is a subjective synonym of Hercoglossa'
- 'Xenocheilus belongs to Pseudonautilidae'
- 'Xenocheilus ulixis belongs to Xenocheilus'