Opinions from J. Peng et al. 2001
- 'Acipenseridae belongs to Acipenseriformes'
- 'Acipenseriformes belongs to Osteichthyes'
- 'Adocidae belongs to Eucryptodira'
- 'Adocus belongs to Adocidae'
- 'Albanerpeton belongs to Albanerpetontidae'
- 'Albanerpetontidae belongs to Allocaudata'
- 'Albulidae belongs to Elopiformes'
- 'Alligatorinae belongs to Crocodylidae'
- 'Allocaudata belongs to Amphibia'
- 'Amiidae belongs to Amiiformes'
- 'Amiiformes belongs to Osteichthyes'
- 'Anapsida belongs to Reptilia'
- 'Anguidae belongs to Anguimorpha'
- 'Anguimorpha belongs to Lacertilia'
- 'Ankylosauria belongs to Ornithischia'
- 'Ankylosauridae belongs to Ankylosauria'
- 'Anuri is corrected as Anura and belongs to Amphibia'
- 'Archaeolamna belongs to Cretoxyrhinidae'
- 'Archosauria belongs to Archosauromorpha'
- 'Archosauromorpha belongs to Diapsida'
- 'Aspidorhynchidae belongs to Aspidorhynchiformes'
- 'Aspidorhynchiformes belongs to Osteichthyes'
- 'Atractosteus belongs to Lepisosteiformes'
- 'Aublysodon belongs to Tyrannosauridae'
- 'Baenidae belongs to Eucryptodira'
- 'Basilemys belongs to Nanhsiungchelyidae'
- 'Batrachosauroididae is corrected as Batrachosauridae and belongs to Caudata'
- 'Belonostomus belongs to Aspidorhynchidae'
- 'Caudata belongs to Amphibia'
- 'Ceratopsia belongs to Ornithischia'
- 'Ceratopsidae belongs to Neoceratopsia'
- 'Champsosauridae belongs to Choristodera'
- 'Champsosaurus belongs to Champsosauridae'
- 'Chelydridae belongs to Eucryptodira'
- 'Chiloscyllium belongs to Hemiscylliidae'
- 'Chiloscyllium missouriense belongs to Chiloscyllium' according to G. R. Case 1979
- 'Chiloscyllium missouriense belongs to Chiloscyllium'
- 'Choristodera belongs to Archosauromorpha'
- 'Colpodontosaurus belongs to Necrosauridae'
- 'Colpodontosaurus cracens belongs to Colpodontosaurus'
- 'Coriops belongs to Albulidae'
- 'Coriops amnicolus belongs to Coriops' according to R. Estes 1969
- 'Coriops amnicolus belongs to Coriops'
- 'Cretoxyrhinidae belongs to Lamniformes'
- 'Crocodilia is corrected as Crocodylia and belongs to Archosauria'
- 'Crocodylidae belongs to Crocodylia'
- 'Cryptodira belongs to Testudines'
- 'Dinosauria belongs to Archosauria'
- 'Dromaeosauridae belongs to Theropoda'
- 'Dromaeosaurus belongs to Dromaeosauridae'
- 'Dromaeosaurus albertensis belongs to Dromaeosaurus'
- 'Elasmobranchii belongs to Chondrichthyes'
- 'Elopidae belongs to Elopiformes'
- 'Elopiformes belongs to Teleostei'
- 'Esoces is corrected as Esocidae and belongs to Esocoidea'
- 'Esocoidea belongs to Salmoniformes'
- 'Estesesox belongs to Esoces'
- 'Estesesox foxi belongs to Estesesox' according to M. V. H. Wilson et al. 1992
- 'Estesesox foxi belongs to Estesesox'
- 'Eucryptodira belongs to Cryptodira'
- 'Euselachii belongs to Elasmobranchii'
- 'Gerontoseps belongs to Teiidae'
- 'Gerontoseps irvinensis belongs to Gerontoseps'
- 'Hadrosauridae belongs to Ornithopoda'
- 'Helodermatidae belongs to Anguimorpha'
- 'Hemiscylliidae belongs to Orectolobiformes'
- 'Hybodontes is corrected as Hybodontidae and belongs to Euselachii'
- 'Hybodus belongs to Hybodontidae'
- 'Ischyrhiza belongs to Sclerorhynchidae'
- 'Ischyrhiza mira belongs to Ischyrhiza' according to J. Leidy 1856
- 'Ischyrhiza mira belongs to Ischyrhiza'
- 'Lacertilia was reranked as a suborder and belongs to Squamata'
- 'Lamniformes belongs to Elasmobranchii'
- 'Leidyosuchus belongs to Crocodylidae'
- 'Lepidosauria was reranked as a superorder and belongs to Lepidosauromorpha'
- 'Lepidosauromorpha belongs to Diapsida'
- 'Lepidotus occidentalis is recombined as Atractosteus occidentalis'
- 'Lepidotus occidentalis is recombined as Lepisosteus occidentalis' according to L. Bryant 1989
- 'Lepidotus occidentalis is recombined as Atractosteus occidentalis' according to Wiley 1976
- 'Lepisosteidae belongs to Lepisosteiformes'
- 'Lepisosteiformes belongs to Osteichthyes'
- 'Lepisosteus [misspelled as Lepidosteus] belongs to Lepisosteidae'
- 'Leptochamops belongs to Teiidae'
- 'Myledaphus belongs to Rajiformes'
- 'Myledaphus bipartitus belongs to Myledaphus' according to E. D. Cope 1876
- 'Myledaphus bipartitus belongs to Myledaphus'
- 'Nanhsiungchelyidae belongs to Eucryptodira'
- 'Naomichelys belongs to Eucryptodira'
- 'Necrosauridae belongs to Anguimorpha'
- 'Neoceratopsia belongs to Ceratopsia'
- 'Nodosauridae belongs to Ankylosauria'
- 'Odaxosaurus belongs to Anguidae'
- 'Odaxosaurus priscus belongs to Odaxosaurus'
- 'Odontaspididae belongs to Lamniformes'
- 'Odontaspis hardingi is recombined as Carcharias hardingi' according to N. Beavan 1995
- 'Odontaspis hardingi is recombined as Synodontaspis hardingi'
- 'Opisthotriton belongs to Batrachosauridae'
- 'Opisthotriton kayi belongs to Opisthotriton'
- 'Orectolobidae belongs to Orectolobiformes'
- 'Orectolobiformes belongs to Elasmobranchii'
- 'Ornithischia belongs to Dinosauria'
- 'Ornithopoda belongs to Ornithischia'
- 'Pachycephalosauria belongs to Ornithischia'
- 'Pachycephalosauridae belongs to Pachycephalosauria'
- 'Palaeosaniwa belongs to Varanidae'
- 'Palaeosaniwa canadensis belongs to Palaeosaniwa'
- 'Palaeospinacidae belongs to Galeomorphii'
- 'Paraderma belongs to Helodermatidae'
- 'Paraderma bogerti belongs to Paraderma'
- 'Paralbula belongs to Paralbulinae'
- 'Paralbula casei belongs to Paralbula' according to R. Estes 1969
- 'Paralbula casei belongs to Paralbula'
- 'Paralbulinae belongs to Phyllodontidae'
- 'Paratarpon belongs to Elopidae'
- 'Paratarpon apogerontus belongs to Paratarpon' according to D. Bardack 1970
- 'Paratarpon apogerontus belongs to Paratarpon'
- 'Paronychodon belongs to Theropoda'
- 'Paronychodon lacustris belongs to Paronychodon'
- 'Pectinodon bakkeri is a subjective synonym of Troodon formosus'
- 'Peltosaurus piger is recombined as Odaxosaurus piger' according to B. Breithaupt 1982
- 'Peltosaurus piger is recombined as Odaxosaurus piger'
- 'Phyllodontidae belongs to Elopiformes'
- 'Phyllodontinae belongs to Phyllodontidae'
- 'Polyodontosaurus grandis is a subjective synonym of Troodon formosus'
- 'Rajiformes belongs to Elasmobranchii'
- 'Rhinobatidae belongs to Rajiformes'
- 'Rhinobatos belongs to Rhinobatidae'
- 'Rhinobatos casieri belongs to Rhinobatos'
- 'Richardoestesia belongs to Theropoda'
- 'Richardoestesia gilmorei belongs to Richardoestesia'
- 'Salmoniformes belongs to Teleostei'
- 'Saurischia belongs to Dinosauria'
- 'Saurornitholestes belongs to Dromaeosauridae'
- 'Saurornitholestes langstoni belongs to Saurornitholestes'
- 'Scapherpeton belongs to Scapherpetonidae'
- 'Scapherpeton tectum belongs to Scapherpeton'
- 'Scapherpetonidae is corrected as Scapherpetontidae and belongs to Caudata'
- 'Scincomorpha belongs to Lacertilia'
- 'Sclerorhynchidae belongs to Rajiformes'
- 'Socognathus belongs to Teiidae'
- 'Socognathus unicuspis belongs to Socognathus'
- 'Squamata belongs to Lepidosauria'
- 'Squatina belongs to Squatinidae'
- 'Squatina hassei belongs to Squatina' according to Leriche 1929
- 'Squatina hassei belongs to Squatina'
- 'Squatinidae belongs to Squatiniformes'
- 'Squatiniformes belongs to Elasmobranchii'
- 'Squatirhina belongs to Orectolobidae'
- 'Squatirhina roessingi belongs to Squatirhina' according to G. R. Case 1987
- 'Squatirhina roessingi belongs to Squatirhina'
- 'Stenonychosaurus inequalis is a subjective synonym of Troodon formosus'
- 'Synechodus belongs to Palaeospinacidae'
- 'Synechodus turneri belongs to Synechodus' according to G. R. Case 1987
- 'Synechodus turneri belongs to Synechodus'
- 'Synodontaspis belongs to Odontaspididae'
- 'Teiidae belongs to Scincomorpha'
- 'Teleostei belongs to Osteichthyes'
- 'Testudines belongs to Anapsida'
- 'Theropoda belongs to Saurischia'
- 'Trionychidae belongs to Eucryptodira'
- 'Troodon belongs to Troodontidae'
- 'Troodon formosus belongs to Troodon'
- 'Troodontidae belongs to Theropoda'
- 'Tyrannosauridae belongs to Theropoda'
- 'Varanidae belongs to Varanoidea'
- 'Varanoidea belongs to Anguimorpha'
- 'Xenosauridae belongs to Anguimorpha'