Opinions from A. Benites-Palomino et al. 2023
- 'Acrophyseter belongs to Panphyseteroidea'
- 'Kogiidae belongs to Physeteroidea'
- 'Phocaenina was reranked as the family Phocoenidae and belongs to Delphinoidea'
- 'Piscolithax belongs to Phocoenidae'
- 'Scaphokogiinae belongs to Kogiidae'