Opinions from J. S. McIntosh 1981
- 'Allosaurus belongs to Megalosauridae'
- 'Anatosaurus is a subjective synonym of Edmontosaurus'
- 'Ankylosauria belongs to Ornithischia'
- 'Antrodemus is a subjective synonym of Allosaurus'
- 'Apatosaurus belongs to Diplodocidae'
- 'Apatosaurus ajax belongs to Apatosaurus'
- 'Apatosaurus grandis is recombined as Camarasaurus grandis'
- 'Apatosaurus louisae belongs to Apatosaurus'
- 'Astrodon johnstoni belongs to Astrodon'
- 'Atlantosaurus immanis is a subjective synonym of Apatosaurus ajax'
- 'Barosaurus belongs to Diplodocidae'
- 'Barosaurus lentus belongs to Barosaurus'
- 'Brontosaurus is a subjective synonym of Apatosaurus'
- 'Brontosaurus amplus is a subjective synonym of Apatosaurus excelsus'
- 'Brontosaurus excelsus is recombined as Apatosaurus excelsus'
- 'Camarasauridae belongs to Sauropoda'
- 'Camarasaurus belongs to Camarasauridae'
- 'Camarasaurus annae is a subjective synonym of Camarasaurus lentus'
- 'Camarasaurus supremus belongs to Camarasaurus'
- 'Camptonotus dispar is recombined as Camptosaurus dispar'
- 'Camptosaurus belongs to Iguanodontidae'
- 'Camptosaurus medius belongs to Camptosaurus'
- 'Centrosaurus belongs to Ceratopsidae'
- 'Centrosaurus apertus belongs to Centrosaurus'
- 'Ceratopsia belongs to Ornithischia'
- 'Ceratopsidae belongs to Ceratopsia'
- 'Ceratosaurus belongs to Megalosaurinidae'
- 'Ceratosaurus nasicornis belongs to Ceratosaurus'
- 'Cetiosauridae belongs to Sauropoda'
- 'Coeluridae belongs to Theropoda'
- 'Compsognathidae belongs to Theropoda'
- 'Compsognathus belongs to Compsognathidae'
- 'Compsognathus longipes belongs to Compsognathus'
- 'Corythosaurus belongs to Lambeosaurinae'
- 'Corythosaurus brevicristatus is a subjective synonym of Corythosaurus casuarius'
- 'Corythosaurus casuarius belongs to Corythosaurus'
- 'Crataeomus is a subjective synonym of Struthiosaurus'
- 'Crataeomus lepidophorus is a subjective synonym of Struthiosaurus austriacus'
- 'Crataeomus pawlowitschii is a subjective synonym of Struthiosaurus austriacus'
- 'Diplodocidae belongs to Sauropoda'
- 'Diplodocus belongs to Diplodocidae'
- 'Diplodocus carnegii belongs to Diplodocus'
- 'Diplodocus hayi belongs to Diplodocus'
- 'Diplodocus longus belongs to Diplodocus'
- 'Dryosaurus belongs to Hypsilophodontidae'
- 'Edmontosaurus belongs to Hadrosaurinae'
- 'Edmontosaurus regalis belongs to Edmontosaurus'
- 'Elosaurus is a subjective synonym of Apatosaurus'
- 'Elosaurus parvus is a subjective synonym of Apatosaurus excelsus'
- 'Hadrosauridae belongs to Ornithopoda'
- 'Hadrosaurinae belongs to Hadrosauridae'
- 'Hadrosaurus belongs to Hadrosaurinae'
- 'Haplocanthosaurus belongs to Cetiosauridae'
- 'Haplocanthosaurus utterbacki is a subjective synonym of Haplocanthosaurus priscus'
- 'Haplocanthus is replaced by Haplocanthosaurus'
- 'Haplocanthus priscus is recombined as Haplocanthosaurus priscus'
- 'Hypsilophodontidae belongs to Ornithopoda'
- 'Iguanodon suessii is recombined as Rhabdodon suessii'
- 'Iguanodontidae belongs to Ornithopoda'
- 'Kritosaurus is a subjective synonym of Hadrosaurus'
- 'Lambeosaurinae belongs to Hadrosauridae'
- 'Laosaurus altus is recombined as Dryosaurus altus'
- 'Megalosauri is corrected as Megalosauridae and belongs to Theropoda'
- 'Mochlodon is a subjective synonym of Rhabdodon'
- 'Morosaurus is a subjective synonym of Camarasaurus'
- 'Morosaurus impar is a subjective synonym of Camarasaurus grandis'
- 'Morosaurus lentus is recombined as Camarasaurus lentus'
- 'Nodosauridae belongs to Ankylosauria'
- 'Ornithomimidae belongs to Theropoda'
- 'Ornithomimus belongs to Ornithomimidae'
- 'Ornithopoda belongs to Ornithischia'
- 'Pachycephalosauridae belongs to Ornithopoda'
- 'Pachycephalosaurus belongs to Pachycephalosauridae'
- 'Plateosauridae belongs to Prosauropoda'
- 'Plateosaurus belongs to Plateosauridae'
- 'Pleurocoelus is a subjective synonym of Astrodon'
- 'Pleurocoelus montanus is a subjective synonym of Camarasaurus grandis'
- 'Prosauropoda was reranked as a suborder and belongs to Saurischia'
- 'Protoceratops belongs to Protoceratopsidae'
- 'Protoceratops andrewsi belongs to Protoceratops'
- 'Protoceratopsidae belongs to Ceratopsia'
- 'Rabdodon is corrected as Rhabdodon and belongs to Iguanodontidae'
- 'Sauropoda was reranked as a suborder and belongs to Saurischia'
- 'Stegosauria belongs to Ornithischia'
- 'Stegosauridae belongs to Stegosauria'
- 'Stegosaurus belongs to Stegosauridae'
- 'Stegosaurus stenops belongs to Stegosaurus'
- 'Stegosaurus ungulatus belongs to Stegosaurus'
- 'Stenonychosaurus belongs to Coeluridae'
- 'Stenonychosaurus inequalis belongs to Stenonychosaurus'
- 'Struthiosaurus belongs to Nodosauridae'
- 'Struthiosaurus austriacus belongs to Struthiosaurus'
- 'Teratosauridae belongs to Theropoda'
- 'Teratosaurus belongs to Teratosauridae'
- 'Teratosaurus suevicus belongs to Teratosaurus'
- 'Theropoda was reranked as a suborder and belongs to Saurischia'
- 'Thescelosaurus belongs to Hypsilophodontidae'
- 'Thescelosaurus neglectus belongs to Thescelosaurus'
- 'Torvosaurus belongs to Megalosauridae'
- 'Torvosaurus tanneri belongs to Torvosaurus'
- 'Triceratops belongs to Ceratopsidae'
- 'Triceratops brevicornus belongs to Triceratops'
- 'Troodon wyomingensis is recombined as Pachycephalosaurus wyomingensis'
- 'Tyrannosauridae belongs to Theropoda'
- 'Tyrannosaurus belongs to Tyrannosauridae'
- 'Tyrannosaurus rex belongs to Tyrannosaurus'
- 'Uintasaurus is a subjective synonym of Camarasaurus'
- 'Uintasaurus douglassi is a subjective synonym of Camarasaurus lentus'