Opinions from T. Arldt 1909
- 'Algoasaurus belongs to Sauropoda'
- 'Ankylosauridae belongs to Orthopoda'
- 'Argyrosaurus belongs to Sauropoda'
- 'Atlantosauridae belongs to Sauropoda'
- 'Atlantosaurus belongs to Atlantosauridae'
- 'Bothriospondylus is a subjective synonym of Pelorosaurus'
- 'Camptosauridae belongs to Ornithopoda'
- 'Ceratopsia belongs to Ornithischia'
- 'Ceratosauridae belongs to Saurischia'
- 'Cetiosauridae belongs to Sauropoda'
- 'Cetiosaurus belongs to Cetiosauridae'
- 'Cetiosaurus longus belongs to Cetiosaurus'
- 'Coeluridae belongs to Saurischia'
- 'Compsognathidae belongs to Saurischia'
- 'Diplodocidae belongs to Sauropoda'
- 'Gigantosaurus belongs to Morosauridae'
- 'Gresslyosauridae belongs to Saurischia'
- 'Iguanodontidae belongs to Ornithopoda'
- 'Megalosauri is corrected as Megalosauridae and belongs to Saurischia'
- 'Megalosaurus belongs to Megalosauridae'
- 'Morosauridae belongs to Sauropoda'
- 'Nanosauridae belongs to Ornithopoda'
- 'Omosauridae belongs to Orthopoda'
- 'Ornithopoda belongs to Ornithischia'
- 'Orthopoda belongs to Ornithischia'
- 'Pelorosaurus belongs to Cetiosauridae'
- 'Plateosauridae belongs to Saurischia'
- 'Sauropoda was reranked as a suborder and belongs to Saurischia'
- 'Sellosauridae belongs to Saurischia'
- 'Thecodontosauridae belongs to Saurischia'
- 'Titanosaurus belongs to Morosauridae'
- 'Trachodontidae belongs to Ornithopoda'
- 'Zanclodontidae belongs to Saurischia'