Opinions from C. M. Scammon and E. D. Cope 1869
- 'Agaphelus belongs to Balaenidae'
- 'Agaphelus glaucus is recombined as Rachianectes glaucus'
- 'Balaena belongs to Balaenidae'
- 'Balaena cullamach belongs to Balaena' according to Chamisso 1868
- 'Balaena mysticetus belongs to Balaena'
- 'Balaena sieboldii belongs to Balaena'
- 'Balaenoptera belongs to Balaenidae'
- 'Balaenoptera velifera belongs to Balaenoptera'
- 'Balanadae is corrected as Balaenidae and belongs to Mysticeti'
- 'Beluga belongs to Delphinidae'
- 'Beluga declivis belongs to Beluga'
- 'Delphinapterus belongs to Delphinidae'
- 'Delphinapterus borealis belongs to Delphinapterus'
- 'Delphinidae belongs to Denticete'
- 'Delphinus belongs to Delphinidae'
- 'Delphinus (Grampus) was reranked as Grampus and belongs to Delphinidae'
- 'Delphinus styx belongs to Delphinus'
- 'Denticete belongs to Cetacea'
- 'Globicephala [misspelled as Globicephalus] belongs to Delphinidae'
- 'Globicephala scammonii belongs to Globicephala'
- 'Globicephalus scammonii belongs to Globicephalus'
- 'Hunterius belongs to Balaenidae'
- 'Hyperoodon [misspelled as Hyperaodon] belongs to Physeteridae'
- 'Lagenorhynchus obliquidens is recombined as Delphinus obliquidens'
- 'Megaptera belongs to Balaenidae'
- 'Megaptera (Eschrichtius) was reranked as Eschrichtius and belongs to Balaenidae'
- 'Monodon belongs to Delphinidae'
- 'Mysticete belongs to Cetacea'
- 'Mysticeti belongs to Cetacea'
- 'Neomeris belongs to Delphinidae'
- 'Orca belongs to Delphinidae'
- 'Orca ater belongs to Orca'
- 'Orca rectipinna belongs to Orca'
- 'Phocaena belongs to Delphinidae'
- 'Phocaena vomerina belongs to Phocaena'
- 'Physeter belongs to Physeteridae'
- 'Physeteridae belongs to Denticete'
- 'Platanistina was reranked as the family Platanistidae and belongs to Denticete'
- 'Rhachianectes [misspelled as Rachianectes] belongs to Balaenidae'
- 'Sagmatias belongs to Delphinidae'
- 'Sibbaldius sulfureus belongs to Sibbaldius'
- 'Sibbaldus is corrected as Sibbaldius and belongs to Balaenidae'