Opinions from C. Muizon 1988
- 'Acrodelphidae belongs to Odontoceti'
- 'Argyrocetus belongs to Eurhinodelphidae'
- 'Cetotherium crassangulum belongs to Cetotherium'
- 'Champsodelphis is a nomen dubium'
- 'Champsodelphis macrognathus is an objective synonym of Champsodelphis macrogenius'
- 'Champsodelphis ombonii is recombined as Dalpiazina ombonii'
- 'Cyrtodelphis is an objective synonym of Schizodelphis'
- 'Cyrtodelphis bogatshowi is recombined as Schizodelphis bogatshowi'
- 'Cyrtodelphis gresalensis is recombined as Eoplatanista gresalensis'
- 'Dalpiazina belongs to Dalpiazinidae'
- 'Delphinorhynchus is a subjective synonym of Schizodelphis' according to O. Abel 1900
- 'Champsodelphis macrogenius is a nomen dubium'
- 'Delphinus sulcatus is recombined as Schizodelphis sulcatus'
- 'Delphinus tetragorhinus is recombined as Medocinia tetragorhina'
- 'Eoplatanistidae belongs to Eurhinodelphoidea'
- 'Eurhinodelphidae belongs to Eurhinodelphoidea'
- 'Eurhinodelphis belongs to Eurhinodelphidae'
- 'Eurhinodelphis longirostris is recombined as Schizodelphis longirostris'
- 'Eurhinodelphoidea belongs to Odontoceti'
- 'Medocinia belongs to Squalodelphidae'
- 'Priscodelphinus crassangulum is recombined as Zarhachis crassangulum'
- 'Rhabdosteus is a nomen dubium'
- 'Rhabdosteus barnesi is recombined as Schizodelphis barnesi'
- 'Rhabdosteus hruschkai is a subjective synonym of Rhabdosteus barnesi'
- 'Rhabdosteus latiradix is a nomen dubium'
- 'Schizodelphis belongs to Eurhinodelphidae'
- 'Schizodelphis brachycephalus is a subjective synonym of Eoplatanista italica'
- 'Schizodelphis yablokovi is a subjective synonym of Eoplatanista gresalensis'
- 'Ziphiodelphis belongs to Eurhinodelphidae'