Opinions from W. W. Nassichuk 1975
- 'Bilinguites canadensis belongs to Bilinguites'
- 'Bilinguites heibergensis belongs to Bilinguites'
- 'Bisatoceras akiyoshiense belongs to Bisatoceras' according to Nishida 1971
- 'Bisatoceras akiyoshiense belongs to Bisatoceras'
- 'Bisatoceras greenei belongs to Bisatoceras'
- 'Bisatoceras hoeni belongs to Bisatoceras'
- 'Bisatoceras kotti belongs to Bisatoceras'
- 'Bisatoceras micromphalus belongs to Bisatoceras' according to McCaleb 1968
- 'Bisatoceras micromphalus belongs to Bisatoceras'
- 'Bisatoceras nevadense belongs to Bisatoceras' according to Gordon 1969
- 'Bisatoceras nevadense belongs to Bisatoceras'
- 'Bisatoceras primum belongs to Bisatoceras'
- 'Bisatoceras renni belongs to Bisatoceras'
- 'Bisatoceras secundum belongs to Bisatoceras'
- 'Bisatoceras solominae belongs to Bisatoceras' according to Popow 1970
- 'Bisatoceras solominae belongs to Bisatoceras'
- 'Boesites eotexanus belongs to Boesites'
- 'Boesites gracilis belongs to Boesites'
- 'Boesites primoris belongs to Boesites'
- 'Boesites serotinus belongs to Boesites' according to Ruzhentsev 1951
- 'Boesites serotinus belongs to Boesites'
- 'Branneroceras hillsi belongs to Branneroceras'
- 'Branneroceras nicholasi belongs to Branneroceras'
- 'Christioceras trifurcatum belongs to Christioceras' according to Nassichuk and Furnish 1965
- 'Clistoceras globosum belongs to Clistoceras' according to Nassichuk 1967
- 'Clistoceras globosum belongs to Clistoceras'
- 'Cravenoceras tozeri belongs to Cravenoceras'
- 'Daraelites girtyi is recombined as Boesites girtyi'
- 'Daraelites scotti is recombined as Boesites scotti'
- 'Daraelites texanus is recombined as Boesites texanus'
- 'Diaboloceras involutum belongs to Diaboloceras'
- 'Diaboloceras neumeieri belongs to Diaboloceras'
- 'Dimorphoceras lenticulare is recombined as Neodimorphoceras lenticulare'
- 'Dimorphoceras oklahomae is recombined as Neodimorphoceras oklahomae'
- 'Dimorphoceras texanum is recombined as Neodimorphoceras texanum'
- 'Eoasianites cadiconiformis [misspelled as Syngastrioceras cadiconiformis] belongs to Syngastrioceras'
- 'Eoasianites globosus is recombined as Syngastrioceras globosum'
- 'Eoasianites merriami belongs to Eoasianites' according to Miller and Furnish 1940
- 'Eoasianites merriami is recombined as Somoholites merriami'
- 'Euroceras ellipsoidale is recombined as Neoglaphyrites ellipsoidale'
- 'Gastrioceras amotapense is recombined as Phaneroceras amotapense'
- 'Gastrioceras branneri is recombined as Branneroceras branneri'
- 'Gastrioceras compressum is recombined as Phaneroceras compressum'
- 'Gastrioceras glenisteri belongs to Gastrioceras'
- 'Gastrioceras kesslerense is recombined as Phaneroceras kesslerense'
- 'Gastrioceras liratum belongs to Gastrioceras'
- 'Gastrioceras melvillensis belongs to Gastrioceras'
- 'Gastrioceras orientale is recombined as Syngastrioceras orientale'
- 'Gastrioceras suborientale is recombined as Syngastrioceras suborientale'
- 'Glaphyrites oblatus is recombined as Syngastrioceras oblatum'
- 'Goniatites elkhornensis is recombined as Neoicoceras elkhornense'
- 'Gonioloboceras eliasi is recombined as Gonioloboceratoides eliasi'
- 'Gonioloboceratoides curvatus belongs to Gonioloboceratoides'
- 'Maximites alexanderi belongs to Maximites'
- 'Melvilloceras sabinensis belongs to Melvilloceras'
- 'Metapronorites ellesmerensis belongs to Metapronorites'
- 'Neodimorphoceras sverdrupi belongs to Neodimorphoceras'
- 'Neogastrioceras arcticum belongs to Neogastrioceras'
- 'Neoglaphyrites bashkiricus belongs to Neoglaphyrites'
- 'Neoglaphyrites bashkiricus belongs to Neoglaphyrites' according to Ruzhentsev 1938
- 'Neoglaphyrites bisulcatus belongs to Neoglaphyrites'
- 'Neoicoceras martini belongs to Neoicoceras'
- 'Phaneroceras lenaense belongs to Phaneroceras' according to Andrianov 1966
- 'Phaneroceras lenaense belongs to Phaneroceras'
- 'Phaneroceras lenticulare belongs to Phaneroceras'
- 'Pronorites arkansasensis is recombined as Pseudopronorites arkansiensis'
- 'Pronorites kansasensis is recombined as Pseudopronorites kansasensis'
- 'Pronorites llanoensis is recombined as Pseudopronorites llanoensis'
- 'Pronorites pseudotimorensis is recombined as Metapronorites pseudotimorensis'
- 'Proshumardites aequalis belongs to Proshumardites'
- 'Proshumardites delepinei belongs to Proshumardites'
- 'Proshumardites karpinskii belongs to Proshumardites'
- 'Proshumardites morrowanus belongs to Proshumardites'
- 'Proshumardites primus belongs to Proshumardites'
- 'Proshumardites principalis belongs to Proshumardites'
- 'Pseudoglaphyrites sholakensis is recombined as Syngastrioceras sholakensis'
- 'Shumardites fornicatus is recombined as Parashumardites fornicatus'
- 'Shumardites sellardsi is recombined as Parashumardites sellardsi'
- 'Shumardites senex belongs to Shumardites' according to Miller and Cline 1934
- 'Shumardites senex is recombined as Parashumardites senex'
- 'Somoholites bamberi belongs to Somoholites'
- 'Stenopronorites karpinskii is recombined as Pseudopronorites karpinskii'
- 'Stenopronorites quinni belongs to Stenopronorites' according to Gordon 1968
- 'Stenopronorites quinni is recombined as Pseudopronorites quinni'
- 'Stenopronorites sersoni belongs to Stenopronorites'
- 'Syngastrioceras aktubense belongs to Syngastrioceras'
- 'Syngastrioceras constrictum belongs to Syngastrioceras'
- 'Syngastrioceras ukrainicum is corrected as Syngastrioceras ukrainicus and belongs to Syngastrioceras'
- 'Syngastrioceras walkeri is recombined as Neoicoceras walkeri'
- 'Trettinoceras ellesmerensis belongs to Trettinoceras'
- 'Winslowoceras domokhotovi belongs to Winslowoceras' according to Popow 1970
- 'Winslowoceras domokhotovi is recombined as Christioceras domokhotovi'
- 'Winslowoceras greelyi belongs to Winslowoceras'