Opinions from E. D. Cope 1869

  • 'Amphorosteus is a subjective synonym of Mosasaurus'
  • 'Amphorosteus brumbyi is recombined as Mosasaurus brumbyi'
  • 'Brimosaurus is a subjective synonym of Cimoliasaurus'
  • 'Brimosaurus grandis is recombined as Cimoliasaurus grandis'
  • 'Cimoliasaurus belongs to Streptosauria'
  • 'Cimoliosaurus magnus is recombined as Cimoliasaurus magnus'
  • 'Clidastes belongs to Clidastidae'
  • 'Clidastes iguanavus belongs to Clidastes'
  • 'Clidastes propython belongs to Clidastes'
  • 'Clidastidae belongs to Pythonomorpha'
  • 'Crymocetus belongs to Streptosauria'
  • 'Discosaurus is a subjective synonym of Cimoliasaurus'
  • 'Discosaurus vetustus is a subjective synonym of Cimoliasaurus magnus'
  • 'Drepanodon impar is recombined as Mosasaurus impar'
  • 'Elasmosaurus belongs to Streptosauria'
  • 'Elasmosaurus orientalis belongs to Elasmosaurus'
  • 'Elasmosaurus platyurus belongs to Elasmosaurus'
  • 'Geosaurus mitchilli belongs to Geosaurus' according to DeKay 1830
  • 'Geosaurus mitchilli is recombined as Mosasaurus mitchillii'
  • 'Ichthyosaurus missouriensis is recombined as Mosasaurus missuriensis'
  • 'Lacerta gigantea belongs to Lacerta' according to Sömmering 1816
  • 'Lacerta gigantea is recombined as Mosasaurus giganteus'
  • 'Macrosaurus belongs to Mosasauridae'
  • 'Macrosaurus laevis belongs to Macrosaurus'
  • 'Mosasauridae belongs to Pythonomorpha'
  • 'Mosasaurus belongs to Mosasauridae'
  • 'Mosasaurus gracilis belongs to Mosasaurus' according to R. Owen 1851
  • 'Mosasaurus gracilis belongs to Mosasaurus'
  • 'Mosasaurus hoffmanni is a subjective synonym of Mosasaurus giganteus'
  • 'Mosasaurus maximus belongs to Mosasaurus'
  • 'Mosasaurus minor belongs to Mosasaurus'
  • 'Nectoportheus validus is recombined as Macrosaurus validus'
  • 'Platecarpus belongs to Mosasauridae'
  • 'Plesiosaurus bernardi is recombined as Crymocetus barnardi'
  • 'Plesiosaurus constrictus is recombined as Elasmosaurus constrictus'
  • 'Plesiosaurus latispinus is recombined as Cimoliasaurus latispinus'
  • 'Pythonomorpha belongs to Reptilia'
  • 'Streptosauria belongs to Reptilia'