Opinions from E. Flores 1895
- 'Aulocetus belongs to Balaenopteridae'
- 'Balaenoptera belongs to Balaenopteridae'
- 'Balaenoptera musculoides belongs to Balaenoptera'
- 'Balaenopteridae belongs to Mystacoceti'
- 'Cetotherium belongs to Balaenopteridae'
- 'Champsodelphis [misspelled as Campsodelphis] belongs to Platanistidae'
- 'Delphinidae belongs to Odontoceti'
- 'Delphinus belongs to Delphinidae'
- 'Dioplodon belongs to Ziphiinae'
- 'Halicoridae belongs to Sirenia'
- 'Heterocetus belongs to Balaenopteridae'
- 'Heterocetus guiscardii belongs to Heterocetus'
- 'Metaxytherium belongs to Halicoridae'
- 'Mystacoceti belongs to Cetacea'
- 'Odontoceti belongs to Cetacea'
- 'Orcopsis belongs to Delphinidae'
- 'Physeteridae belongs to Odontoceti'
- 'Physeterinae belongs to Physeteridae'
- 'Physodon belongs to Physeterinae'
- 'Physodon leccense belongs to Physodon'
- 'Platanistina was reranked as the family Platanistidae and belongs to Odontoceti'
- 'Plesiocetus belongs to Balaenopteridae'
- 'Plesiocetus garopii [misspelled as Plesiocetus goropii] belongs to Plesiocetus'
- 'Priscodelphinus belongs to Platanistidae'
- 'Priscodelphinus squalodontoides belongs to Priscodelphinus'
- 'Schizodelphis belongs to Platanistidae'
- 'Squalodon belongs to Squalodontidae'
- 'Squalodon antverpiensis belongs to Squalodon'
- 'Squalodontidae belongs to Odontoceti'
- 'Tursiops belongs to Delphinidae'
- 'Ziphiinae belongs to Physeteridae'
- 'Ziphius gibbus is recombined as Dioplodon gibbus'
- 'Ziphius tenuirostris is recombined as Dioplodon tenuirostris'