Opinions from J. C. Mansel-Pleydell 1902
- 'Allosaurus belongs to Megalosauridae'
- 'Allosaurus fragilis belongs to Allosaurus'
- 'Anchisauridae belongs to Theropoda'
- 'Anchisaurus belongs to Anchisauridae'
- 'Anchisaurus colurus belongs to Anchisaurus'
- 'Apatosaurus belongs to Atlantosauridae'
- 'Atlantosauridae belongs to Sauropoda'
- 'Atlantosaurus belongs to Atlantosauridae'
- 'Brontosaurus belongs to Atlantosauridae'
- 'Brontosaurus excelsus belongs to Brontosaurus'
- 'Brontozoum belongs to Megalosaurinidae'
- 'Camptonotus amplus is recombined as Camptosaurus amplus'
- 'Camptonotus dispar is recombined as Camptosaurus dispar'
- 'Camptosaurus belongs to Iguanodontidae'
- 'Camptosaurus leedsi belongs to Camptosaurus'
- 'Camptosaurus valdensis belongs to Camptosaurus'
- 'Ceratops belongs to Ceratopidae'
- 'Ceratops horridus is recombined as Triceratops horridus'
- 'Ceratops montanus belongs to Ceratops'
- 'Ceratopsidae [misspelled as Ceratopidae] belongs to Ornithopoda'
- 'Ceratosauridae belongs to Theropoda'
- 'Ceratosaurus belongs to Ceratosauridae'
- 'Ceratosaurus nasicornis [misspelled as Ceratosaurus nascomis] belongs to Ceratosaurus'
- 'Cetiosauridae belongs to Sauropoda'
- 'Cetiosaurus belongs to Cetiosauridae'
- 'Ceteosaurus humerocristatus is a subjective synonym of Ornithopsis leedsi'
- 'Claosaurus belongs to Iguanodontidae'
- 'Claosaurus annectens [misspelled as Cliosaurus annectens] belongs to Claosaurus'
- 'Coeluridae belongs to Theropoda'
- 'Compsognathidae belongs to Theropoda'
- 'Compsognathus belongs to Compsognathidae'
- 'Compsognathus longipes belongs to Compsognathus'
- 'Crataeomus is a subjective synonym of Struthiosaurus'
- 'Diplodocidae belongs to Sauropoda'
- 'Hadrosauridae is a subjective synonym of Trachydontidae'
- 'Hadrosaurus paucidens is recombined as Ceratops paucidens'
- 'Hallopus belongs to Theropoda'
- 'Hypsilophodon belongs to Iguanodontidae'
- 'Iguanodon belongs to Iguanodontidae'
- 'Iguanodon bernissartensis belongs to Iguanodon'
- 'Iguanodon dawsoni belongs to Iguanodon'
- 'Iguanodon fittoni belongs to Iguanodon'
- 'Iguanodon hollingtoniensis belongs to Iguanodon'
- 'Iguanodon mantelli belongs to Iguanodon'
- 'Iguanodon prestwichii is recombined as Camptosaurus prestwichii'
- 'Iguanodontidae belongs to Ornithopoda'
- 'Ischyrosaurus is a subjective synonym of Ornithopsis'
- 'Ischyrosaurus manseli is a subjective synonym of Ornithopsis leedsi'
- 'Megalosauri is corrected as Megalosauridae and belongs to Theropoda'
- 'Megalosaurus belongs to Megalosauridae'
- 'Morosaurus belongs to Cetiosauridae'
- 'Nanosaurus victor is recombined as Hallopus victor'
- 'Nodosaurus belongs to Stegosauridae'
- 'Omosaurus is a subjective synonym of Stegosaurus'
- 'Ornithopoda belongs to Dinosauria'
- 'Ornithopsis belongs to Atlantosauridae'
- 'Ornithopsis hulkei belongs to Ornithopsis'
- 'Ornithopsis leedsi belongs to Ornithopsis'
- 'Sauropoda was reranked as a suborder and belongs to Dinosauria'
- 'Scelidosauridae belongs to Ornithopoda'
- 'Scelidosaurus belongs to Scelidosauridae'
- 'Scelidosaurus harrisonii [misspelled as Scelidosaurus harrisoni] belongs to Scelidosaurus'
- 'Stegosauridae belongs to Ornithopoda'
- 'Stegosaurus belongs to Stegosauridae'
- 'Stegosaurus ungulatus belongs to Stegosaurus'
- 'Stenopelix belongs to Ornithopoda'
- 'Sterrholophus belongs to Ceratopidae'
- 'Struthiosaurus belongs to Ceratopidae'
- 'Theropoda was reranked as a suborder and belongs to Dinosauria'
- 'Trachodontidae [misspelled as Trachydontidae] belongs to Ornithopoda'
- 'Triceratops belongs to Ceratopidae'
- 'Triceratops flabellatus belongs to Triceratops'
- 'Triceratops prorsus belongs to Triceratops'
- 'Triceratops serratus belongs to Triceratops'
- 'Triceratops sulcatus belongs to Triceratops'