Opinions from J. E. Gray 1846
- 'Balaena belongs to Balaenidae'
- 'Balaena boops is a subjective synonym of Balaenoptera physalus'
- 'Balaena longipinna is recombined as Megaptera longipinna'
- 'Balaena musculus is a subjective synonym of Balaenoptera physalus'
- 'Balaena mysticetus belongs to Balaena'
- 'Balaena physalus is recombined as Balaenoptera physalus'
- 'Balaena rostrata is a subjective synonym of Balaenoptera physalus'
- 'Catodon belongs to Catodontidae'
- 'Delphinus belongs to Delphinidae'
- 'Delphinus (Delphinorhynchus) was reranked as Delphinorhynchus and belongs to Delphinidae'
- 'Delphinus (Grampus) was reranked as Grampus and belongs to Delphinidae'
- 'Delphinus delphis belongs to Delphinus'
- 'Delphinus globiceps belongs to Delphinus' according to G. Cuvier 1812
- 'Delphinus globiceps is a subjective synonym of Globicephalus melas'
- 'Delphinus griseus is a subjective synonym of Grampus cuvieri'
- 'Delphinus hunteri is recombined as Hyperoodon hunteri'
- 'Delphinus melas is recombined as Globicephalus melas'
- 'Delphinus micropterus is a subjective synonym of Delphinorhynchus sowerbyi'
- 'Delphinus orca is a subjective synonym of Orca gladiator'
- 'Delphinus phocaena is a subjective synonym of Phocaena communis'
- 'Delphinus sowerbyi belongs to Delphinus' according to Desmarest 1822
- 'Delphinus sowerbyi is recombined as Delphinorhynchus sowerbyi'
- 'Delphinus tursio belongs to Delphinus'
- 'Globicephala [misspelled as Globicephalus] belongs to Delphinina'
- 'Heterodon dalei belongs to Heterodon' according to Lesson 1827
- 'Delphinus dalei is a subjective synonym of Delphinorhynchus sowerbyi'
- 'Hyperoodon belongs to Delphinidae'
- 'Hyperoodon butskopf belongs to Hyperoodon'
- 'Lagenorhynchus belongs to Delphinidae'
- 'Monodon belongs to Delphinidae'
- 'Monodon monoceros belongs to Monodon'
- 'Orca belongs to Delphinidae'
- 'Phocaena belongs to Delphinidae'
- 'Physeter belongs to Catodontidae'
- 'Physeter bidens is a subjective synonym of Delphinorhynchus sowerbyi'
- 'Physeter macrocephalus is recombined as Catodon macrocephalus'
- 'Physeter tursio belongs to Physeter'
- 'Delphinus truncatus is a subjective synonym of Delphinus tursio'