Opinions from H. Gadow 1897
- 'Allosaurus belongs to Theropoda'
- 'Anchisaurus belongs to Theropoda'
- 'Atlantosaurus belongs to Sauropoda'
- 'Brontosaurus belongs to Sauropoda'
- 'Camptosaurus belongs to Ornithopoda'
- 'Ceratops belongs to Ceratopsia'
- 'Ceratopsia belongs to Dinosauri'
- 'Ceratosaurus belongs to Theropoda'
- 'Coelurus belongs to Theropoda'
- 'Compsognathus belongs to Theropoda'
- 'Diclonius belongs to Ornithopoda'
- 'Diplodocus belongs to Sauropoda'
- 'Hadrosaurus belongs to Ornithopoda'
- 'Hallopus belongs to Theropoda'
- 'Hypsilophodon belongs to Ornithopoda'
- 'Iguanodon belongs to Ornithopoda'
- 'Laosaurus belongs to Ornithopoda'
- 'Megalosaurus belongs to Theropoda'
- 'Morosaurus belongs to Sauropoda'
- 'Ornithichnites giganteus is recombined as Brontozoum giganteum'
- 'Ornithomimus belongs to Ornithopoda'
- 'Ornithopoda was reranked as a infraorder and belongs to Orthopoda'
- 'Ornithopsis belongs to Sauropoda'
- 'Orthopoda belongs to Dinosauri'
- 'Sauropoda belongs to Dinosauri'
- 'Scelidosaurus belongs to Stegosauri'
- 'Stegosauria was reranked as the infraorder Stegosauri and belongs to Orthopoda'
- 'Stegosaurus belongs to Stegosauri'
- 'Theropoda was reranked as a suborder and belongs to Dinosauri'
- 'Triceratops belongs to Ceratopsia'
- 'Zanclodon belongs to Theropoda'