Opinions from E. T. Tozer 1979
- 'Choristoceras belongs to Choristoceratidae'
- 'Choristoceras crickmayi belongs to Choristoceras'
- 'Choristoceras suttonensis is corrected as Choristoceras suttonense and belongs to Choristoceras'
- 'Choristocerataceae belongs to Ceratitida'
- 'Choristoceratidae belongs to Choristocerataceae'
- 'Clydonitaceae belongs to Ceratitida'
- 'Cochloceratidae belongs to Choristocerataceae'
- 'Cycloceltites belongs to Cycloceltitidae'
- 'Cycloceltitidae belongs to Choristocerataceae'
- 'Gnomohalorites belongs to Haloritinae'
- 'Gnomohalorites cordilleranus belongs to Gnomohalorites'
- 'Gnomohalorites southeri belongs to Gnomohalorites'
- 'Gnomohalorites yukonensis belongs to Gnomohalorites'
- 'Halorites americanus is recombined as Gnomohalorites americanus'
- 'Haloritidae belongs to Tropitaceae'
- 'Haloritinae belongs to Haloritidae'
- 'Lissonites belongs to Metasibiritidae'
- 'Metasibirites belongs to Metasibiritidae'
- 'Metasibirites columbianus belongs to Metasibirites'
- 'Metasibiritidae belongs to Clydonitaceae'
- 'Miltites pauli belongs to Miltites' according to Mojsisovics 1893
- 'Miltites pauli is recombined as Paraguembelites pauli'
- 'Nassichukites belongs to Metasibiritidae'
- 'Nassichukites dimidiatus belongs to Nassichukites'
- 'Nevadites lissoni is recombined as Lissonites lissoni'
- 'Nevadites sutanensis is recombined as Lissonites sutanensis'
- 'Paraguembelites belongs to Haloritinae'
- 'Peripleurites belongs to Rhabdoceratidae'
- 'Peripleurites stuerzenbaumi is recombined as Vandaites stuerzenbaumi'
- 'Rhabdoceras belongs to Rhabdoceratidae'
- 'Rhabdoceratidae belongs to Choristocerataceae'
- 'Tropitoidea is corrected as Tropitaceae and belongs to Ceratitida'
- 'Vandaites belongs to Choristoceratidae'