Opinions from J. F. Bonaparte 1999
- 'Aeolosaurus belongs to Titanosauridae'
- 'Amargasaurus belongs to Dicraeosauridae'
- 'Andesaurinae was reranked as the family Andesauridae and belongs to Titanosauria'
- 'Andesaurus belongs to Andesauridae'
- 'Apatosauridae belongs to Sauropoda'
- 'Apatosaurus belongs to Apatosauridae'
- 'Apatosaurus louisae belongs to Apatosaurus'
- 'Argentinosaurus belongs to Andesauridae'
- 'Argentinosaurus huinculensis belongs to Argentinosaurus'
- 'Argyrosaurus belongs to Titanosauridae'
- 'Barapasaurus belongs to Cetiosauridae'
- 'Brachiosauridae belongs to Sauropoda'
- 'Brachiosaurus belongs to Brachiosauridae'
- 'Brachiosaurus altithorax belongs to Brachiosaurus'
- 'Brachiosaurus brancai belongs to Brachiosaurus'
- 'Brontosaurus excelsus is recombined as Apatosaurus excelsus'
- 'Camarasauridae belongs to Sauropoda'
- 'Camarasaurus belongs to Camarasauridae'
- 'Cetiosauridae belongs to Sauropoda'
- 'Dicraeosauridae belongs to Sauropoda'
- 'Dicraeosaurus belongs to Dicraeosauridae'
- 'Diplodocidae belongs to Sauropoda'
- 'Diplodocus belongs to Diplodocidae'
- 'Diplodocus carnegii belongs to Diplodocus'
- 'Haplocanthosauridae belongs to Sauropoda'
- 'Haplocanthosaurus belongs to Haplocanthosauridae'
- 'Haplocanthosaurus utterbacki belongs to Haplocanthosaurus'
- 'Haplocanthus priscus is recombined as Haplocanthosaurus priscus'
- 'Lapparentosaurus belongs to Sauropoda'
- 'Lapparentosaurus madagascariensis belongs to Lapparentosaurus'
- 'Lessemsaurus belongs to Melanorosauridae'
- 'Lessemsaurus sauropoides belongs to Lessemsaurus'
- 'Malawisaurus belongs to Titanosauria'
- 'Neuquensaurus belongs to Titanosauridae'
- 'Opisthocoelicaudia belongs to Opisthocoelicaudidae'
- 'Opisthocoelicaudiinae was reranked as the family Opisthocoelicaudidae and belongs to Titanosauria'
- 'Patagosaurus belongs to Cetiosauridae'
- 'Patagosaurus fariasi belongs to Patagosaurus'
- 'Rebbachisauridae belongs to Sauropoda'
- 'Rebbachisaurus belongs to Rebbachisauridae'
- 'Rebbachisaurus garasbae belongs to Rebbachisaurus'
- 'Rebbachisaurus tessonei belongs to Rebbachisaurus'
- 'Riojasaurus belongs to Melanorosauridae'
- 'Saltasaurus belongs to Titanosauridae'
- 'Titanosauridae belongs to Titanosauria'
- 'Titanosaurinae belongs to Titanosauridae'
- 'Volkheimeria belongs to Sauropoda'
- 'Volkheimeria chubutensis belongs to Volkheimeria'