Opinions from G. Pilleri 1987
- 'Aulocetus belongs to Balaenidae'
- 'Balaena belongs to Balaenidae'
- 'Balaena balaenopsis is recombined as Balaenula balaenopsis'
- 'Balaena cuvierii is recombined as Balaenoptera acutorostrata cuvierii'
- 'Balaena etrusca belongs to Balaena'
- 'Balaena forsythmajori belongs to Balaena'
- 'Balaena glacialis is recombined as Eubalaena glacialis'
- 'Balaena montalionis is recombined as Balaenula montalionis'
- 'Balaenoptera belongs to Balaenopteridae'
- 'Balaenoptera acutorostrata belongs to Balaenoptera'
- 'Balaenotus belongs to Balaenidae'
- 'Balaenotus insignis belongs to Balaenotus'
- 'Balaenotus lawley is corrected as Balaenotus lawleyi and belongs to Balaenotus'
- 'Balaenotus orcianensis belongs to Balaenotus'
- 'Balaenula belongs to Balaenidae'
- 'Berardiopsis belongs to Ziphiidae'
- 'Berardiopsis pliocaenus belongs to Berardiopsis'
- 'Choneziphius belongs to Ziphiidae'
- 'Delphinus belongs to Delphinidae'
- 'Delphinus cortesii is recombined as Tursiops cortesii'
- 'Delphinus giulii is recombined as Steno giulii'
- 'Dioplodon bononiensis is recombined as Mesoplodon bononiensis'
- 'Dioplodon danconae is recombined as Mesoplodon danconae'
- 'Dioplodon lawley is recombined as Mesoplodon lawleyi'
- 'Dioplodon meneghinii is recombined as Mesoplodon meneghinii'
- 'Dioplodon senensis is recombined as Mesoplodon senensis'
- 'Eubalaena belongs to Balaenidae'
- 'Globicephala belongs to Delphinidae'
- 'Globicephala etruriae belongs to Globicephala'
- 'Hyperoodon belongs to Ziphiidae'
- 'Hyperoodon pusillus belongs to Hyperoodon'
- 'Idiocetus belongs to Balaenopteridae'
- 'Idiocetus guicciardinii belongs to Idiocetus'
- 'Kogia belongs to Physeteridae'
- 'Mesocetus belongs to Cetotheriidae'
- 'Mesoplodon belongs to Ziphiidae'
- 'Orca citoniensis is recombined as Orcinus citoniensis'
- 'Orcinus belongs to Delphinidae'
- 'Palaeodelphis grandis is recombined as Scaldicetus grandis'
- 'Physeter belongs to Physeteridae'
- 'Physeter breviceps is recombined as Kogia breviceps'
- 'Physeter macrocephalus belongs to Physeter'
- 'Scaldicetus belongs to Physeteridae'
- 'Schizodelphis compressus belongs to Schizodelphis'
- 'Squalodon belongs to Squalodontidae'
- 'Squalodon quaternarium is a nomen nudum'
- 'Squalodontidae belongs to Squalodontoidea'
- 'Steno belongs to Delphinidae'
- 'Steno bellardii belongs to Steno'
- 'Tursiops belongs to Delphinidae'
- 'Tursiops capellinii is recombined as Tursiops cortesii capellinii'
- 'Tursiops miocaenus belongs to Tursiops'
- 'Tursiops osennae belongs to Tursiops'
- 'Ziphius gibbus is recombined as Mesoplodon gibbus'
- 'Ziphius longirostris is recombined as Mesoplodon longirostris'
- 'Ziphius medilineatus is recombined as Mesoplodon medilineatus'
- 'Ziphius planirostris is recombined as Choneziphius planirostris'
- 'Ziphius tenuirostris is recombined as Mesoplodon tenuirostris'