Opinions from G. G. Simpson 1932

  • 'Desmostylidae belongs to Desmostyliformes'
  • 'Desmostyliformes belongs to Sirenia'
  • 'Desmostylus belongs to Desmostylidae'
  • 'Dugong belongs to Dugonginae'
  • 'Dugongidae belongs to Trichechiformes'
  • 'Dugonginae belongs to Dugongidae'
  • 'Eotheroides belongs to Prorastomidae'
  • 'Felsinotherium belongs to Halitheriinae'
  • 'Felsinotherium gunteri belongs to Felsinotherium'
  • 'Felsinotherium ossivallense belongs to Felsinotherium'
  • 'Halitheriidae was reranked as the family Halitheriinae and belongs to Dugongidae'
  • 'Halitherium belongs to Halitheriinae'
  • 'Hesperosiren belongs to Halitheriinae'
  • 'Hesperosiren crataegensis belongs to Hesperosiren'
  • 'Hydrodamalidae was reranked as the subfamily Hydrodamalinae and belongs to Dugongidae'
  • 'Hydrodamalis belongs to Hydrodamalinae'
  • 'Manatherium belongs to Halitheriinae'
  • 'Manatus antiquus is a nomen dubium'
  • 'Manatus inornatus is a nomen dubium'
  • 'Metaxytherium belongs to Halitheriinae'
  • 'Metaxytherium floridanum is recombined as Felsinotherium floridanum'
  • 'Miosiren belongs to Miosireninae'
  • 'Miosireninae belongs to Dugongidae'
  • 'Prorastomidae belongs to Trichechiformes'
  • 'Prorastomus belongs to Prorastomidae'
  • 'Rytiodinae belongs to Dugongidae'
  • 'Rytiodus belongs to Rytiodinae'
  • 'Thalattosiren belongs to Halitheriinae'
  • 'Trichechiformes belongs to Sirenia'
  • 'Trichecidae is corrected as Trichechidae and belongs to Trichechiformes'