Opinions from A. d'Orbigny 1849
- 'Aeolodon [misspelled as Aelodon] belongs to Crocodilidae'
- 'Capitosaurus belongs to Labyrinthodontidae'
- 'Cetiosaurus belongs to Crocodilidae'
- 'Cladeiodon [misspelled as Cladyodon] belongs to Lacertinidae'
- 'Clypeastres is corrected as Clypeasteridae and belongs to Irregularia'
- 'Conchiosaurus belongs to Ichthyosauridae'
- 'Crocodylidae is corrected as Crocodilidae and belongs to Sauria'
- 'Crocodylus [misspelled as Crocodilus] belongs to Crocodilidae'
- 'Geosaurus belongs to Lacertinidae'
- 'Gnathosaurus belongs to Crocodilidae'
- 'Goniopholis belongs to Crocodilidae'
- 'Hylaeosaurus belongs to Megalosaurinidae'
- 'Ichthyosauridae belongs to Sauria'
- 'Ichthyosaurus belongs to Ichthyosauridae'
- 'Ichthyosaurus communis belongs to Ichthyosaurus'
- 'Iguanodon belongs to Megalosaurinidae'
- 'Iguanodon mantelli belongs to Iguanodon'
- 'Labyrinthodon belongs to Labyrinthodontidae'
- 'Labyrinthodontidae belongs to Sauria'
- 'Lacerta belongs to Lacertinidae'
- 'Lacertidae is corrected as Lacertinidae and belongs to Sauria'
- 'Leiodon belongs to Lacertinidae'
- 'Macrospondylus belongs to Crocodilidae'
- 'Mastodonsaurus belongs to Labyrinthodontidae'
- 'Megalosauri is corrected as Megalosaurinidae and belongs to Sauria'
- 'Megalosaurus belongs to Megalosauridae'
- 'Metopias belongs to Labyrinthodontidae'
- 'Mosasaurus belongs to Lacertinidae'
- 'Mystriosaurus belongs to Crocodilidae'
- 'Nothosaurus belongs to Ichthyosauridae'
- 'Ophidia belongs to Reptilia'
- 'Palaeophis belongs to Ophidia'
- 'Palaeosaurus belongs to Lacertinidae'
- 'Pelagosaurus belongs to Crocodilidae'
- 'Phytosaurus belongs to Crocodilidae'
- 'Pistosaurus belongs to Ichthyosauridae'
- 'Plesiosaurus belongs to Ichthyosauridae'
- 'Plesiosaurus (Pleiosaurus) was reranked as Pliosaurus and belongs to Ichthyosauridae'
- 'Plesiosaurus dolichodeirus belongs to Plesiosaurus'
- 'Pleurosaurus belongs to Crocodilidae'
- 'Poekilopleuron [misspelled as Poecilopleuron] belongs to Crocodilidae'
- 'Protorosaurus belongs to Lacertinidae'
- 'Pterodactylidae belongs to Sauria'
- 'Pterodactylus belongs to Pterodactylidae'
- 'Pterodactylus crassirostris belongs to Pterodactylus'
- 'Raphiosaurus belongs to Lacertinidae'
- 'Rhynchosaurus belongs to Lacertinidae'
- 'Sauria belongs to Reptilia'
- 'Simosaurus belongs to Ichthyosauridae'
- 'Spondylosaurus belongs to Ichthyosauridae'
- 'Steneosaurus belongs to Crocodilidae'
- 'Streptospondylus belongs to Crocodilidae'
- 'Suchosaurus [misspelled as Succhosaurus] belongs to Crocodilidae'
- 'Teleosaurus belongs to Crocodilidae'
- 'Thecodontosaurus belongs to Lacertinidae'