Opinions from P. J. Van Beneden and P. Gervais 1880
- 'Anoplonassa forcipata belongs to Anoplonassa'
- 'Aporotus affinis belongs to Aporotus'
- 'Aporotus dicyrtus belongs to Aporotus'
- 'Aporotus recurvirostris belongs to Aporotus'
- 'Arionius servatus is recombined as Squalodon servatus'
- 'Balaena biscayensis belongs to Balaena'
- 'Balaena boops belongs to Balaena' according to Fabricuius 1780
- 'Balaena boops is a subjective synonym of Balaenoptera musculus'
- 'Balaena boops is recombined as Megaptera boops'
- 'Balaena cortesii is recombined as Plesiocetus cortesii'
- 'Balaena japonica belongs to Balaena'
- 'Balaena longimana is a subjective synonym of Megaptera boops'
- 'Balaena musculus is recombined as Balaenoptera musculus'
- 'Balaena nodosa is a subjective synonym of Megaptera boops'
- 'Balaena rostrata is recombined as Balaenoptera rostrata'
- 'Eubalaena sieboldii is a subjective synonym of Balaena japonica'
- 'Balaenodon physaloides belongs to Balaenodon'
- 'Balaenoptera acutorostrata is a subjective synonym of Balaenoptera rostrata'
- 'Balaenoptera australis is a subjective synonym of Megaptera lalandii'
- 'Belemnoziphius compressus is recombined as Dioplodon compressus'
- 'Belemnoziphius recurvus is recombined as Dioplodon recurvus'
- 'Berardius arnuxii belongs to Berardius'
- 'Cetotherium vandelli is corrected as Cetotherium vandellii and belongs to Cetotherium'
- 'Champsodelphis acutus belongs to Champsodelphis'
- 'Champsodelphis dubius belongs to Champsodelphis'
- 'Champsodelphis fuchsii belongs to Champsodelphis'
- 'Champsodelphis karreri belongs to Champsodelphis'
- 'Champsodelphis letochae belongs to Champsodelphis'
- 'Champsodelphis scaldensis belongs to Champsodelphis'
- 'Champsodelphis valenciennesii is a subjective synonym of Champsodelphis macrogenius'
- 'Delphinapterus gabbii is recombined as Tretosphys gabbii'
- 'Delphinapterus lacertosus is recombined as Tretosphys lacertosus'
- 'Delphinapterus ruschenbergeri is recombined as Tretosphys ruschenbergeri'
- 'Delphinopsis freyeri belongs to Delphinopsis'
- 'Delphinus blainvillei is recombined as Pontoporia blainvillei'
- 'Delphinus calvertensis is recombined as Lophocetus calvertensis'
- 'Delphinus canaliculatus is recombined as Schizodelphis canaliculatus'
- 'Delphinus conradi is recombined as Priscodelphinus conradi'
- 'Delphinus dationum is recombined as Champsodelphis dationum'
- 'Delphinus gangeticus is recombined as Platanista gangetica'
- 'Delphinus leucorhamphus is recombined as Prodelphinus leucorhamphus'
- 'Delphinus macrogenius is recombined as Champsodelphis macrogenius'
- 'Delphinus planus is recombined as Schizodelphis planus'
- 'Delphinus pseudodelphis is a subjective synonym of Schizodelphis sulcatus'
- 'Delphinus renovi is recombined as Champsodelphis renovi'
- 'Delphinus sowerbiensis is recombined as Mesoplodon sowerbiensis'
- 'Delphinus sulcatus is recombined as Schizodelphis sulcatus'
- 'Delphinus tetragorhinus is recombined as Champsodelphis tetragorhinus'
- 'Delphinus tetragorhinus is recombined as Champsodelphis tetragorhinus'
- 'Delphinus tuchuschi belongs to Delphinus'
- 'Dioplodon becanii belongs to Dioplodon'
- 'Eucetus is a subjective synonym of Dinoziphius'
- 'Eudelphinus tasmaniensis belongs to Eudelphinus'
- 'Eurhinodelphis ambiguus is recombined as Eurhinorhynchus ambiguus'
- 'Eurhinodelphis cocheteuxi belongs to Eurhinodelphis'
- 'Eurhinodelphis longirostris belongs to Eurhinodelphis'
- 'Erpetocetus is a misspelling of Herpetocetus'
- 'Heterodelphis klinderi belongs to Heterodelphis'
- 'Homocetus villersii belongs to Homocetus'
- 'Hoplocetus is a subjective synonym of Balaenodon'
- 'Hoplocetus borgerhoutensis belongs to Hoplocetus'
- 'Hoplocetus crassidens belongs to Hoplocetus'
- 'Hoplocetus curvidens belongs to Hoplocetus'
- 'Hoplocetus obesus belongs to Hoplocetus'
- 'Ixacanthus coelospondylus belongs to Ixacanthus'
- 'Megaptera lalandii belongs to Megaptera'
- 'Megaptera poeskop is a subjective synonym of Megaptera lalandii'
- 'Mesoplodon (Cetorhynchus) christolii is recombined as Cetorhynchus christolii'
- 'Pachyacanthus letochae belongs to Pachyacanthus'
- 'Pachyacanthus suessii belongs to Pachyacanthus'
- 'Pachyacanthus trachyspondylus belongs to Pachyacanthus'
- 'Palaeodelphis is a subjective synonym of Physodon'
- 'Palaeodelphis arcuatus belongs to Palaeodelphis'
- 'Palaeodelphis coronatus belongs to Palaeodelphis'
- 'Palaeodelphis fusiformis belongs to Palaeodelphis'
- 'Palaeodelphis grandis belongs to Palaeodelphis'
- 'Palaeodelphis minutus belongs to Palaeodelphis'
- 'Palaeodelphis pachyodon belongs to Palaeodelphis'
- 'Palaeodelphis zonatus belongs to Palaeodelphis'
- 'Physeter antiquus belongs to Physeter' according to P. Gervais 1849
- 'Physeter antiquus belongs to Physeter'
- 'Physeter breviceps is recombined as Kogia breviceps'
- 'Physeter physaloides is an objective synonym of Balaenodon physaloides'
- 'Physodon leccense belongs to Physodon'
- 'Placoziphius duboisii belongs to Placoziphius'
- 'Platanista indi belongs to Platanista'
- 'Plesiocetus gervaisii belongs to Plesiocetus'
- 'Poescopia lalandii is a subjective synonym of Megaptera lalandii'
- 'Priscodelphinus atropius belongs to Priscodelphinus'
- 'Priscodelphinus crassus belongs to Priscodelphinus'
- 'Priscodelphinus cristatus belongs to Priscodelphinus'
- 'Priscodelphinus declivus belongs to Priscodelphinus'
- 'Priscodelphinus elegans belongs to Priscodelphinus'
- 'Priscodelphinus grandaevus is recombined as Tretosphys grandaevus'
- 'Priscodelphinus morckhoviensis belongs to Priscodelphinus'
- 'Priscodelphinus productus belongs to Priscodelphinus'
- 'Priscodelphinus pulvinatus belongs to Priscodelphinus'
- 'Priscodelphinus robustus belongs to Priscodelphinus'
- 'Priscodelphinus spinosus belongs to Priscodelphinus'
- 'Priscodelphinus stenus belongs to Priscodelphinus'
- 'Priscodelphinus teres belongs to Priscodelphinus'
- 'Priscodelphinus validus belongs to Priscodelphinus'
- 'Prodelphinus belongs to Delphinidae'
- 'Pterobalaena minor is a subjective synonym of Balaenoptera rostrata'
- 'Rhabdosteus latiradix belongs to Rhabdosteus'
- 'Rhinostodes antwerpiensis belongs to Rhinostodes'
- 'Rorqualus antarcticus is a subjective synonym of Megaptera lalandii'
- 'Rorqualus minor belongs to Rorqualus' according to Hamilton 1837
- 'Rorqualus minor is a subjective synonym of Balaenoptera rostrata'
- 'Scaldicetus antwerpiensis belongs to Scaldicetus'
- 'Scaldicetus caretti belongs to Scaldicetus'
- 'Squalodon gervaisii is corrected as Squalodon gervaisi and belongs to Squalodon'
- 'Squalodon grateloupii [misspelled as Squalodon grateloupi] belongs to Squalodon'
- 'Tretosphys uraeus belongs to Tretosphys'
- 'Zarhachis flagellator belongs to Zarhachis'
- 'Zarhachis tysonii belongs to Zarhachis'
- 'Zarhachis velox belongs to Zarhachis'
- 'Ziphiopsis phymatodes belongs to Ziphiopsis'
- 'Ziphiopsis servatus belongs to Ziphiopsis'
- 'Ziphirostrum gracile belongs to Ziphirostrum'
- 'Ziphirostrum laevigatum belongs to Ziphirostrum'
- 'Ziphirostrum marginatum belongs to Ziphirostrum'
- 'Ziphirostrum tumidum belongs to Ziphirostrum'
- 'Ziphirostrum turninense belongs to Ziphirostrum'
- 'Ziphius angulatus is recombined as Dioplodon angulatus'
- 'Ziphius angustus is recombined as Dioplodon angustus'
- 'Ziphius cavirostris belongs to Ziphius'
- 'Ziphius gibbus is recombined as Dioplodon gibbus'
- 'Ziphius layardii is recombined as Dolichodon layardii'
- 'Ziphius longirostris is recombined as Dioplodon longirostris'
- 'Ziphius medilineatus is recombined as Dioplodon medilineatus'
- 'Ziphius planirostris is recombined as Choneziphius planirostris'
- 'Ziphius tenuirostris is recombined as Dioplodon tenuirostris'