Opinions from H. Gadow 1901
- 'Allosaurus belongs to Theropoda'
- 'Anchisaurus belongs to Theropoda'
- 'Anchisaurus colurus [misspelled as Anchisaurus coelurus] belongs to Anchisaurus'
- 'Apatosaurus grandis is recombined as Morosaurus grandis'
- 'Atlantosaurus belongs to Sauropoda'
- 'Atlantosaurus immanis belongs to Atlantosaurus'
- 'Brontosaurus belongs to Sauropoda'
- 'Brontosaurus excelsus belongs to Brontosaurus'
- 'Brontozoum belongs to Theropoda'
- 'Camptosaurus belongs to Ornithopoda'
- 'Ceratopsia was reranked as a order and belongs to Dinosauria'
- 'Ceratosaurus belongs to Theropoda'
- 'Ceratosaurus nasicornis belongs to Ceratosaurus'
- 'Cetiosaurus belongs to Sauropoda'
- 'Coelurus belongs to Theropoda'
- 'Coelurus gracilis belongs to Coelurus'
- 'Compsognathus belongs to Theropoda'
- 'Compsognathus longipes belongs to Compsognathus'
- 'Diclonius belongs to Ornithopoda'
- 'Dinosauria was reranked as a subclass and belongs to Reptilia'
- 'Diplodocus belongs to Sauropoda'
- 'Diplodocus longus belongs to Diplodocus'
- 'Hadrosaurus belongs to Ornithopoda'
- 'Hallopus belongs to Theropoda'
- 'Hylaeosaurus belongs to Stegosauri'
- 'Hypsilophodon belongs to Ornithopoda'
- 'Hypsilophodon foxii is corrected as Hypsilophodon foxi and belongs to Hypsilophodon'
- 'Iguanodon belongs to Ornithopoda'
- 'Iguanodon bernissartensis belongs to Iguanodon'
- 'Iguanodon mantelli belongs to Iguanodon'
- 'Laosaurus belongs to Ornithopoda'
- 'Megalosaurus belongs to Theropoda'
- 'Megalosaurus bucklandii is corrected as Megalosaurus bucklandi and belongs to Megalosaurus'
- 'Morosaurus belongs to Sauropoda'
- 'Nanosaurus victor is recombined as Hallopus victor'
- 'Nodosaurus belongs to Ceratopsia'
- 'Omosaurus is a subjective synonym of Stegosaurus'
- 'Omosaurus armatus is recombined as Stegosaurus armatus'
- 'Ornithichnites giganteus is recombined as Brontozoum giganteum'
- 'Ornithomimus belongs to Ornithopoda'
- 'Ornithomimus grandis belongs to Ornithomimus'
- 'Ornithopoda belongs to Orthopoda'
- 'Ornithopsis belongs to Sauropoda'
- 'Orthopoda was reranked as a order and belongs to Dinosauria'
- 'Polacanthus belongs to Stegosauri'
- 'Sauropoda was reranked as a order and belongs to Dinosauria'
- 'Scelidosaurus belongs to Stegosauri'
- 'Scelidosaurus harrisonii [misspelled as Scelidosaurus harrisoni] belongs to Scelidosaurus'
- 'Stegosauria is corrected as Stegosauri and belongs to Orthopoda'
- 'Stegosaurus belongs to Stegosauri'
- 'Theropoda belongs to Dinosauria'
- 'Trachodon mirabilis is recombined as Hadrosaurus mirabilis'
- 'Triceratops belongs to Ceratopsia'
- 'Triceratops flabellatus belongs to Triceratops'
- 'Triceratops prorsus belongs to Triceratops'
- 'Zanclodon belongs to Theropoda'