Opinions from E. S. Sobolev 1989
- 'Anoploceras belongs to Tainoceratidae'
- 'Arctonautilus dolganensis belongs to Arctonautilus'
- 'Arctonautilus egorovi belongs to Arctonautilus'
- 'Arctonautilus migayi belongs to Arctonautilus'
- 'Arctonautilus orbiculatus belongs to Arctonautilus'
- 'Arctonautilus spatiosus belongs to Arctonautilus'
- 'Arctonautilus zvetkovi belongs to Arctonautilus'
- 'Cenoceras boreale belongs to Cenoceras' according to Dagys and Sobolev 1988
- 'Cenoceras boreale belongs to Cenoceras'
- 'Cosmonautilus polaris belongs to Cosmonautilus'
- 'Enoploceras nestori is recombined as Phaedrysmocheilus nestori'
- 'Germanonautilus belongs to Tainoceratidae'
- 'Germanonautilus anceps belongs to Germanonautilus'
- 'Germanonautilus bytschkovi belongs to Germanonautilus'
- 'Germanonautilus kyotanii belongs to Germanonautilus' according to Nakazawa 1959
- 'Germanonautilus kyotanii belongs to Germanonautilus'
- 'Germanonautilus ljubovae is recombined as Arctonautilus ljubovae'
- 'Germanonautilus popowi belongs to Germanonautilus'
- 'Germanonautilus sibiricus belongs to Germanonautilus'
- 'Grypoceras buriji belongs to Grypoceras' according to Kiparisova 1961
- 'Grypoceras buriji is a subjective synonym of Germanonautilus kyotanii'
- 'Gryponautilus anianiensis belongs to Gryponautilus' according to Shimansky 1957
- 'Gryponautilus anianiensis is recombined as Proclydonautilus anianiensis'
- 'Gryponautilus kegalensis belongs to Gryponautilus'
- 'Nautilus nordenskjoldi belongs to Nautilus' according to Lindstrom 1885
- 'Nautilus nordenskjoldi is recombined as Syringonautilus nordenskjoldi'
- 'Nautilus spirolobus is recombined as Proclydonautilus spirolobus'
- 'Nautilus subaratus is recombined as Phaedrysmocheilus subaratus'
- 'Paranautilus asiaticus belongs to Paranautilus'
- 'Paranautilus smithi belongs to Paranautilus'
- 'Phaedrysmocheilus evolutus belongs to Phaedrysmocheilus'
- 'Phaedrysmocheilus involutus belongs to Phaedrysmocheilus'
- 'Phaedrysmocheilus ornatus belongs to Phaedrysmocheilus'
- 'Phaedrysmocheilus suavis is a subjective synonym of Phaedrysmocheilus nestori'
- 'Phaedrysmocheilus suavis belongs to Phaedrysmocheilus' according to Schastlivtseva 1986
- 'Phaedrysmocheilus velivolus belongs to Phaedrysmocheilus'
- 'Pleuronautilus olenekensis is a subjective synonym of Phaedrysmocheilus subaratus'
- 'Pleuronautilus taimyrensis is recombined as Anoploceras taimyrensis'
- 'Proclydonautilus kiparisovae belongs to Proclydonautilus' according to Popov 1939
- 'Proclydonautilus kiparisovae belongs to Proclydonautilus'
- 'Proclydonautilus natosini belongs to Proclydonautilus' according to McLearn 1946
- 'Proclydonautilus natosini belongs to Proclydonautilus'
- 'Proclydonautilus pseudoseimkanensis belongs to Proclydonautilus'
- 'Proclydonautilus seimkanensis belongs to Proclydonautilus'
- 'Siberionautilus angulatus belongs to Siberionautilus' according to Popov 1951
- 'Siberionautilus angulatus is recombined as Yakutionautilus angulatus'
- 'Siberionautilus multilobatus belongs to Siberionautilus' according to Popov 1951
- 'Siberionautilus multilobatus belongs to Siberionautilus'
- 'Sibyllonautilus artus belongs to Sibyllonautilus'
- 'Sibyllonautilus orientalis belongs to Sibyllonautilus'
- 'Thuringionautilus is a subjective synonym of Germanonautilus'
- 'Tomponautilus setorymi belongs to Tomponautilus'
- 'Yakutionautilus kavalerovae belongs to Yakutionautilus' according to Arkhipov and Barskov 1970
- 'Yakutionautilus kavalerovae belongs to Yakutionautilus'