Opinions from H. G. Seeley 1869
- 'Acanthopholis belongs to Dinosauria'
- 'Acanthopholis macrocercus belongs to Acanthopholis'
- 'Acanthopholis platypus belongs to Acanthopholis'
- 'Acanthopholis stereocercus belongs to Acanthopholis'
- 'Chelone camperi belongs to Chelone'
- 'Chelonemys ovata belongs to Chelonemys'
- 'Conchiosaurus clavatus belongs to Conchiosaurus'
- 'Crocodilus cultridens is recombined as Suchosaurus cultridens'
- 'Dakosaurus lissocephalus belongs to Dakosaurus'
- 'Dicynodon lacerticeps belongs to Dicynodon'
- 'Dicynodon strigiceps belongs to Dicynodon'
- 'Dicynodon testudiceps belongs to Dicynodon'
- 'Enaliochelys belongs to Chelonia'
- 'Enaliochelys chelonia belongs to Enaliochelys'
- 'Enaliornis segdwicki is corrected as Enaliornis sedgwicki and belongs to Enaliornis'
- 'Gigantosaurus belongs to Reptilia'
- 'Gigantosaurus megalonyx belongs to Gigantosaurus'
- 'Gnathosaurus subulatus belongs to Gnathosaurus'
- 'Goniopholis crassidens belongs to Goniopholis'
- 'Ichthyosaurus angustidens belongs to Ichthyosaurus'
- 'Ichthyosaurus campylodon belongs to Ichthyosaurus'
- 'Ichthyosaurus communis belongs to Ichthyosaurus'
- 'Ichthyosaurus walkeri belongs to Ichthyosaurus'
- 'Iguanodon mantelli belongs to Iguanodon'
- 'Iguanodon phillipsii belongs to Iguanodon'
- 'Macrurosaurus belongs to Dinosauria'
- 'Mosasaurus gracilis belongs to Mosasaurus'
- 'Mosasaurus maximilliani belongs to Mosasaurus'
- 'Nothosaurus andriani belongs to Nothosaurus'
- 'Nothosaurus giganteus is recombined as Dracosaurus giganteus'
- 'Nothosaurus mirabilis belongs to Nothosaurus'
- 'Nothosaurus venustus belongs to Nothosaurus'
- 'Ornithocephalus muensteri is recombined as Pterodactylus munsteri'
- 'Ornithocephalus rhamphastinus is recombined as Pterodactylus rhamphastinus'
- 'Ornithocheirus belongs to Ornithosauria'
- 'Ornithocheirus platyrhinus belongs to Ornithocheirus'
- 'Pelagornis barretti is recombined as Enaliornis barretti'
- 'Placodus andriani belongs to Placodus'
- 'Placodus gigas belongs to Placodus'
- 'Placodus impressus belongs to Placodus'
- 'Placodus muensteri belongs to Placodus'
- 'Placodus rostratus belongs to Placodus'
- 'Plesiosaurus (Pleiosaurus) brachydeirus is recombined as Pliosaurus brachydeirus'
- 'Plesiosaurus brachyspondylus is recombined as Pliosaurus brachyspondylus'
- 'Plesiosaurus cliduchus belongs to Plesiosaurus'
- 'Plesiosaurus dolichodeirus belongs to Plesiosaurus'
- 'Plesiosaurus eleutheraxon [misspelled as Plesiosaurus eleutheraxion] belongs to Plesiosaurus'
- 'Plesiosaurus hawkinsii belongs to Plesiosaurus'
- 'Plesiosaurus macrodeirus belongs to Plesiosaurus'
- 'Plesiosaurus macropterus belongs to Plesiosaurus'
- 'Plesiosaurus megacephalus belongs to Plesiosaurus'
- 'Plesiosaurus megadeirus belongs to Plesiosaurus'
- 'Plesiosaurus oxfordiensis belongs to Plesiosaurus'
- 'Plesiosaurus philarchus belongs to Plesiosaurus'
- 'Plesiosaurus planus belongs to Plesiosaurus'
- 'Pleurosaurus goldfussi belongs to Pleurosaurus'
- 'Pleurosternon oweni belongs to Pleurosternon'
- 'Pleurosternon sedgwicki belongs to Pleurosternon'
- 'Pleurosternon vansittarti belongs to Pleurosternon'
- 'Pliosaurus evansi belongs to Pliosaurus'
- 'Pliosaurus pachydeirus belongs to Pliosaurus'
- 'Polyptychodon interruptus belongs to Polyptychodon'
- 'Ptenodactylus belongs to Ornithosauria'
- 'Ptenodactylus brachyrhinus belongs to Ptenodactylus'
- 'Ptenodactylus capito belongs to Ptenodactylus'
- 'Ptenodactylus colorhinus belongs to Ptenodactylus'
- 'Ptenodactylus crassidens belongs to Ptenodactylus'
- 'Ptenodactylus dentatus belongs to Ptenodactylus'
- 'Ptenodactylus enchorhynchus belongs to Ptenodactylus'
- 'Ptenodactylus eurygnathus belongs to Ptenodactylus'
- 'Ptenodactylus macrorhinus belongs to Ptenodactylus'
- 'Ptenodactylus microdon belongs to Ptenodactylus'
- 'Ptenodactylus nasutus belongs to Ptenodactylus'
- 'Ptenodactylus oxyrhinus belongs to Ptenodactylus'
- 'Ptenodactylus platystomus belongs to Ptenodactylus'
- 'Ptenodactylus polyodon belongs to Ptenodactylus'
- 'Ptenodactylus scaphorhynchus belongs to Ptenodactylus'
- 'Ptenodactylus tenuirostris belongs to Ptenodactylus'
- 'Pterodactylus carteri is recombined as Ornithocheirus carteri'
- 'Pterodactylus cuvieri is recombined as Ptenodactylus cuvieri'
- 'Pterodactylus fittoni is recombined as Ptenodactylus fittoni'
- 'Pterodactylus longicaudus [misspelled as Rhamphorhynchus longicauda] belongs to Rhamphorhynchus'
- 'Pterodactylus machaerorhynchus is recombined as Ptenodactylus machaerorhynchus'
- 'Pterodactylus macrurus belongs to Pterodactylus'
- 'Pterodactylus medius belongs to Pterodactylus'
- 'Pterodactylus oweni is recombined as Ptenodactylus oweni'
- 'Pterodactylus sedgwickii is recombined as Ptenodactylus sedgwickii'
- 'Pterodactylus simus is recombined as Ornithocheirus simus'
- 'Pterodactylus suevicus belongs to Pterodactylus'
- 'Pterodactylus woodwardi is recombined as Ptenodactylus woodwardi'
- 'Rhamphorhynchus longimanus belongs to Rhamphorhynchus'
- 'Rhinochelys belongs to Chelonia'
- 'Rhynchosaurus articeps belongs to Rhynchosaurus'
- 'Saurospondylus dissimilis belongs to Saurospondylus' according to Seeley 1865
- 'Saurospondylus dissimilis belongs to Saurospondylus'
- 'Steneosaurus dasycephalus belongs to Steneosaurus'
- 'Stereosaurus belongs to Plesiosauria'
- 'Trachydermochelys belongs to Chelonii'