Opinions from F. P. Moreno and A. Mercerat 1891

  • 'Brontornis belongs to Brontornithidae'
  • 'Brontornithidae belongs to Stereornithes'
  • 'Cathartes belongs to Cathartidae'
  • 'Cathartes fossilis belongs to Cathartes'
  • 'Cathartidae belongs to Accipitres'
  • 'Darwinornis belongs to Darwinornithidae'
  • 'Darwinornis copei belongs to Darwinornis'
  • 'Darwinornis socialis belongs to Darwinornis'
  • 'Darwinornis zitteli belongs to Darwinornis'
  • 'Darwinornithidae belongs to Stereornithes'
  • 'Dryornis belongs to Dryornithidae'
  • 'Dryornis pampeanus belongs to Dryornis'
  • 'Dryornithidae belongs to Stereornithes'
  • 'Falconidae belongs to Accipitres'
  • 'Foetopterus belongs to Falconidae'
  • 'Foetopterus ambiguus belongs to Foetopterus'
  • 'Lagopterus belongs to Falconidae'
  • 'Lagopterus minutus belongs to Lagopterus'
  • 'Mesembriornis belongs to Stereornithidae'
  • 'Mesembriornis milneedwardsi belongs to Mesembriornis'
  • 'Mesembriornis quatrefagesi belongs to Mesembriornis'
  • 'Mesembriornis quatrefragesi belongs to Mesembriornis'
  • 'Mesembriornis studeri belongs to Mesembriornis'
  • 'Owenornis belongs to Darwinornithidae'
  • 'Owenornis affinis belongs to Owenornis'
  • 'Palaeociconia australis belongs to Palaeociconia'
  • 'Palaeociconia cristata belongs to Palaeociconia'
  • 'Palaeospheniscus belongs to Spheniscidae'
  • 'Palaeospheniscus antarcticus belongs to Palaeospheniscus'
  • 'Palaeospheniscus menzbieri belongs to Palaeospheniscus'
  • 'Palaeospheniscus patagonicus belongs to Palaeospheniscus'
  • 'Patagornis belongs to Stereornithidae'
  • 'Patagornis bachmanni belongs to Patagornis'
  • 'Patagornis lemoinei belongs to Patagornis'
  • 'Patagornis marshi belongs to Patagornis'
  • 'Phalacrocoracidae belongs to Steganopodes'
  • 'Phalacrocorax belongs to Phalacrocoracidae'
  • 'Phalacrocorax pampeanus belongs to Phalacrocorax'
  • 'Phororhacos longissimus belongs to Phororhacos'
  • 'Phorusrhacos is corrected as Phororhacos and belongs to Stereornithidae'
  • 'Protorhea belongs to Rheidae'
  • 'Protorhea azarae belongs to Protorhea'
  • 'Psilopterus belongs to Cathartidae'
  • 'Psilopterus australis belongs to Psilopterus'
  • 'Psilopterus communis belongs to Psilopterus'
  • 'Psilopterus intermedius belongs to Psilopterus'
  • 'Rhea belongs to Rheidae'
  • 'Rhea fossilis belongs to Rhea'
  • 'Rhea pampeana belongs to Rhea'
  • 'Rhea subpampeana belongs to Rhea'
  • 'Rheidae belongs to Struthiones'
  • 'Rostrornis belongs to Brontornithidae'
  • 'Sarcoramphus is corrected as Sarcorhamphus and belongs to Cathartidae'
  • 'Sarcorhamphus fossilis belongs to Sarcorhamphus'
  • 'Spheniscidae belongs to Impennes'
  • 'Stereornis belongs to Stereornithidae'
  • 'Stereornis rollieri belongs to Stereornis'
  • 'Stereornithes belongs to Aves'
  • 'Stereornithidae belongs to Stereornithes'
  • 'Struthiones belongs to Aves'