Opinions from J. T. Thurmond and D. E. Jones 1981
- 'Abdounia recticonia belongs to Abdounia' according to Winkler 1873
- 'Abdounia recticonia is recombined as Galeorhinus recticonus'
- 'Acipenseridae belongs to Acipenseriformes'
- 'Acipenseriformes belongs to Chondrostei'
- 'Acrodobatis belongs to Orectolobidae'
- 'Ginglymostoma obliquum is a subjective synonym of Ginglymostoma serra'
- 'Acrodobatis serra is recombined as Ginglymostoma serra'
- 'Acrodobatis serra belongs to Acrodobatis' according to Leidy 1877
- 'Actinopterygii was reranked as a class and belongs to Osteichthyes'
- 'Aetobatus [misspelled as Aetiobatis] belongs to Myliobatidae'
- 'Agomphus belongs to Dermatemydidae'
- 'Agomphus alabamensis belongs to Agomphus'
- 'Alabamornis gigantea is a subjective synonym of Basilosaurus cetoides'
- 'Albula belongs to Albulidae'
- 'Albula dunklei belongs to Albula' according to Applegate 1970
- 'Albula dunklei belongs to Albula'
- 'Albulidae belongs to Albuloidei'
- 'Albuloidei belongs to Elopiformes'
- 'Alopias belongs to Alopiidae'
- 'Alopias latidens belongs to Alopias' according to Leriche 1909
- 'Alopias latidens alabamensis belongs to Alopias latidens' according to White 1956
- 'Alopiidae belongs to Galeoidea'
- 'Amiiformes belongs to Holostei'
- 'Amphibia belongs to Vertebrata'
- 'Anacoracidae belongs to Galeoidea'
- 'Anapsida belongs to Reptilia'
- 'Anguilliformes belongs to Teleostei'
- 'Ankylosauria belongs to Ornithischia'
- 'Anomoeodus belongs to Pycnodontes'
- 'Aprionodon belongs to Carcharhinidae'
- 'Archaeoceti belongs to Cetacea'
- 'Archaeodelphis belongs to Patriocetidae'
- 'Archaeodelphis patrius belongs to Archaeodelphis'
- 'Archosauria was reranked as a subclass and belongs to Reptilia'
- 'Artiodactyla belongs to Mammalia'
- 'Attenosaurus belongs to Rhachitomi'
- 'Attenosaurus indistinctus is a subjective synonym of Attenosaurus subulensis'
- 'Attenosaurus subulensis belongs to Attenosaurus' according to Aldrich and Jones 1930
- 'Attenosaurus subulensis belongs to Attenosaurus'
- 'Aves belongs to Vertebrata'
- 'Bananogmiidae belongs to Albuloidei'
- 'Bananogmius belongs to Bananogmiidae'
- 'Basilosauridae belongs to Archaeoceti'
- 'Basilosaurus belongs to Basilosauridae'
- 'Basilosaurus kochii is recombined as Zygorhiza kochii'
- 'Batoidea belongs to Elasmobranchii'
- 'Blochiidae belongs to Scombroidei'
- 'Bothremys belongs to Pelomedusidae'
- 'Bovidae belongs to Ruminantia'
- 'Bradyodonti belongs to Chondrichthyes'
- 'Calcarichelys belongs to Protostegidae'
- 'Calcarichelys gemma belongs to Calcarichelys'
- 'Camelidae belongs to Ruminantia'
- 'Carcharhinidae belongs to Galeoidea'
- 'Carcharias angustidens is recombined as Carcharodon (Procarcharodon) angustidens'
- 'Carcharodon (Procarcharodon) belongs to Carcharodon'
- 'Carcharopsis wortheni is recombined as Dicrenodus wortheni'
- 'Carcharopsis wortheni belongs to Carcharopsis' according to Newberry and Worthen 1866
- 'Carnivora belongs to Mammalia'
- 'Cervidae belongs to Ruminantia'
- 'Cetacea belongs to Mammalia'
- 'Chelonii is corrected as Chelonia and belongs to Anapsida'
- 'Cheloniidae belongs to Cryptodira'
- 'Chelosphargis belongs to Protostegidae'
- 'Chimaeriformes belongs to Holocephali'
- 'Chimaeroidei belongs to Chimaeriformes'
- 'Chondrostei belongs to Actinopterygii'
- 'Ciconiiformes belongs to Aves'
- 'Cimolichthys belongs to Enchodontidae'
- 'Cincosaurus cobbi belongs to Cincosaurus'
- 'Cincosaurus jaggerensis belongs to Cincosaurus' according to Aldrich and Jones 1930
- 'Cincosaurus jaggerensis is a subjective synonym of Cincosaurus cobbi'
- 'Cincosaurus jonesii belongs to Cincosaurus' according to Aldrich and Jones 1930
- 'Cincosaurus jonesii is a subjective synonym of Cincosaurus cobbi'
- 'Cladodus belongs to Cladoselachidae'
- 'Cladodus magnificus belongs to Cladodus' according to Tuomey 1858
- 'Cladodus newmani belongs to Cladodus' according to Tuomey 1858
- 'Cladoselache belongs to Cladoselachidae'
- 'Cladoselachidae belongs to Cladoselachii'
- 'Cladoselachii belongs to Elasmobranchii'
- 'Clidastes belongs to Mosasaurinae'
- 'Clidastes intermedius is recombined as Platecarpus intermedius'
- 'Clidastes propython belongs to Clidastes'
- 'Clidastes sternbergi is recombined as Halisaurus sternbergi'
- 'Clupeidae belongs to Clupeiformes'
- 'Clupeiformes belongs to Osteichthyes'
- 'Coelorhynchus acus belongs to Coelorhynchus' according to Cope 1870
- 'Coelorhynchus acus is recombined as Cylindracanthus acus'
- 'Coelorhynchus rectus belongs to Coelorhynchus' according to Agassiz 1843
- 'Coelorhynchus rectus is recombined as Cylindracanthus rectus'
- 'Conger belongs to Anguilliformes'
- 'Conger brevior belongs to Conger' according to Koken 1888
- 'Conger brevior belongs to Conger'
- 'Conger sanctus belongs to Conger' according to Frizzell and Lamber 1962
- 'Conger sanctus belongs to Conger'
- 'Corax affinis is recombined as Pseudocorax affinis'
- 'Corax falcatus is recombined as Squalicorax falcatus'
- 'Corsochelys belongs to Cheloniidae'
- 'Corsochelys haliniches belongs to Corsochelys'
- 'Crocodilia belongs to Archosauria'
- 'Cryptodira belongs to Chelonia'
- 'Ctenacanthidae belongs to Cladoselachii'
- 'Ctenacanthus belongs to Ctenacanthidae'
- 'Ctenacanthus elegans belongs to Ctenacanthus' according to Tuomey 1858
- 'Ctenochelys belongs to Lophochelyinae'
- 'Ctenochelys acris belongs to Ctenochelys'
- 'Ctenochelys tennuitesta belongs to Ctenochelys' according to Zangerl 1953
- 'Ctenochelys tennuitesta belongs to Ctenochelys'
- 'Cylindracanthus belongs to Blochiidae'
- 'Cylindracanthus ornatus belongs to Cylindracanthus' according to Leidy 1856
- 'Cylindracanthus ornatus is a subjective synonym of Cylindracanthus rectus'
- 'Dasyatidae belongs to Myliobatoidea'
- 'Dasyatis belongs to Dasyatidae'
- 'Dercetidae belongs to Salmoniformes'
- 'Dermatemydidae belongs to Cryptodira'
- 'Dermochelyidae [misspelled as Dermochelidae] belongs to Cryptodira'
- 'Dicrenodus belongs to Hybodontes'
- 'Dinodontidae is corrected as Deinodontidae and belongs to Theropoda'
- 'Diodon belongs to Diodontidae'
- 'Diodontidae belongs to Tetraodontiformes'
- 'Discosaurus belongs to Elasmosauridae'
- 'Discosaurus vetustus belongs to Discosaurus'
- 'Dorudontidae belongs to Archaeoceti'
- 'Edaphodon belongs to Edaphodontidae'
- 'Edaphodon barberi belongs to Edaphodon' according to Applegate 1970
- 'Edaphodon mirificus belongs to Edaphodon'
- 'Edaphodontidae belongs to Chimaeroidei'
- 'Edentata belongs to Mammalia'
- 'Elasmobranchii belongs to Chondrichthyes'
- 'Elasmosauridae belongs to Plesiosauroidea'
- 'Elephantidae belongs to Proboscidea'
- 'Elephas belongs to Elephantidae'
- 'Elephas americanus is recombined as Mammut americanum'
- 'Elephas columbi belongs to Elephas'
- 'Elopidae belongs to Elopoidei'
- 'Elopiformes belongs to Teleostei'
- 'Elopoidei belongs to Elopiformes'
- 'Empo nepaholica is recombined as Cimolichthys nepaholica'
- 'Enchodontidae belongs to Salmoniformes'
- 'Enchodus belongs to Enchodontidae'
- 'Enchodus petrosus belongs to Enchodus'
- 'Enchodus saevus belongs to Enchodus'
- 'Equidae belongs to Hippomorpha'
- 'Equus belongs to Equidae'
- 'Erisichthe belongs to Pachycormidae'
- 'Erisichthe nitida is recombined as Protosphyraena nitida'
- 'Galeocerdo belongs to Carcharhinidae'
- 'Galeocerdo alabamensis belongs to Galeocerdo' according to Leriche 1942
- 'Galeocerdo alabamensis belongs to Galeocerdo'
- 'Galeocerdo clarkensis belongs to Galeocerdo'
- 'Galeoidea belongs to Selachii'
- 'Galeorhinus belongs to Carcharhinidae'
- 'Galeorhinus falconeri belongs to Galeorhinus'
- 'Galeorhinus recticonus claibornensis belongs to Galeorhinus recticonus'
- 'Galeus pristodontus is recombined as Squalicorax pristiodontus'
- 'Ginglymostoma belongs to Orectolobidae'
- 'Ginglymostoma blanckenhorni belongs to Ginglymostoma' according to Stromer 1905
- 'Globidens alabamensis [misspelled as Globidens alabamaensis] belongs to Globidens'
- 'Hadrianus belongs to Testudinidae'
- 'Hadrianus schucherti belongs to Hadrianus'
- 'Hadrodontidae belongs to Semionotoidei'
- 'Hadrodus belongs to Hadrodontidae'
- 'Hadrodus priscus belongs to Hadrodus' according to Leidy 1857
- 'Hadrodus priscus belongs to Hadrodus'
- 'Hadrosauridae belongs to Ornithopoda'
- 'Halisaurus belongs to Mosasaurinae'
- 'Hemipristis belongs to Carcharhinidae'
- 'Heterodontidae belongs to Heterodontoidea'
- 'Heterodontoidea belongs to Selachii'
- 'Heterodontus belongs to Heterodontidae'
- 'Heterodontus woodwardi belongs to Heterodontus'
- 'Hipparion belongs to Equidae'
- 'Hipparion (Nannippus) was reranked as Nannippus and belongs to Equidae'
- 'Hipparion phosphorum belongs to Hipparion'
- 'Hippomorpha belongs to Perissodactyla'
- 'Holcodus coryphaeus is recombined as Platecarpus coryphaeus'
- 'Holocephali belongs to Chondrichthyes'
- 'Holostei belongs to Actinopterygii'
- 'Hybodontes is corrected as Hybodontidae and belongs to Hybodontoidea'
- 'Hybodontoidea belongs to Selachii'
- 'Hydrarchos harlani is a subjective synonym of Basilosaurus cetoides'
- 'Hydrargos sillimanii is a subjective synonym of Basilosaurus cetoides'
- 'Hypolophus belongs to Dasyatidae'
- 'Hypoprion greyegertoni is recombined as Aprionodon greyegertoni'
- 'Ichthyodectes belongs to Ichthyodectidae'
- 'Ichthyodectes ctenodon belongs to Ichthyodectes'
- 'Ichthyodectidae belongs to Osteichthyes'
- 'Ischyrhiza belongs to Pristidae'
- 'Ischyrhiza mira belongs to Ischyrhiza'
- 'Isurus belongs to Lamnidae'
- 'Isurus praecursor belongs to Isurus'
- 'Labroidei is corrected as Labridae and belongs to Labroidei'
- 'Lacertilia was reranked as a suborder and belongs to Squamata'
- 'Lamna belongs to Lamnidae'
- 'Lamna (Odontaspis) hopei is recombined as Odontaspis hopei'
- 'Lamna (Odontaspis) rhaphiodon is recombined as Scapanorhynchus raphiodon'
- 'Lamna (Odontaspis) verticalis is recombined as Odontaspis verticalis'
- 'Lamna appendiculata belongs to Lamna'
- 'Lamna mantellii is recombined as Isurus mantelli'
- 'Lamna mediavia belongs to Lamna' according to Leriche 1940
- 'Lamna mediavia belongs to Lamna'
- 'Lamnidae belongs to Galeoidea'
- 'Lepidosauria was reranked as a superorder and belongs to Reptilia'
- 'Lepisosteidae belongs to Lepisostoidei'
- 'Lepisosteioidei [misspelled as Lepisostoidei] belongs to Semionotiformes'
- 'Liodon curtirostris is recombined as Platecarpus curtirostris'
- 'Liodon ictericus is recombined as Platecarpus ictericus'
- 'Lophochelyinae belongs to Toxochelyidae'
- 'Lophochelys belongs to Lophochelyinae'
- 'Lophochelys venatrix belongs to Lophochelys'
- 'Lophorhothon belongs to Hadrosauridae'
- 'Lophorhothon atopus belongs to Lophorhothon'
- 'Mammalia belongs to Vertebrata'
- 'Mammut belongs to Mastodontidae'
- 'Mastodonadae is corrected as Mastodontidae and belongs to Proboscidea'
- 'Megalonychidae belongs to Pilosa'
- 'Megalonyx belongs to Megalonychidae'
- 'Megatherium jeffersonii is recombined as Megalonyx jeffersonii'
- 'Miacidae belongs to Carnivora'
- 'Moorevillia belongs to Bananogmiidae'
- 'Moorevillia hardi belongs to Moorevillia' according to Applegate 1970
- 'Moorevillia hardi belongs to Moorevillia'
- 'Mosasauridae belongs to Lacertilia'
- 'Mosasaurinae belongs to Mosasauridae'
- 'Mosasaurus belongs to Mosasaurinae'
- 'Mugiloidei belongs to Perciformes'
- 'Myliobatidae belongs to Myliobatoidea'
- 'Myliobatoidea was reranked as a suborder and belongs to Batoidea'
- 'Mysticeti belongs to Cetacea'
- 'Negaprion gibbesi gilmorei belongs to Negaprion gibbesi' according to White 1956
- 'Negaprion gibbesi gilmorei belongs to Negaprion gibbesi'
- 'Odontaspididae is corrected as Odontaspidae and belongs to Galeoidea'
- 'Odontaspis macrota semistriata belongs to Odontaspis macrota' according to Leriche 1942
- 'Odontaspis macrota semistriata belongs to Odontaspis macrota'
- 'Odontaspis malletiana belongs to Odontaspis'
- 'Odontoceti belongs to Cetacea'
- 'Orectolobidae belongs to Galeoidea'
- 'Ornithischia belongs to Archosauria'
- 'Ornithopoda belongs to Ornithischia'
- 'Osteichthyes belongs to Vertebrata'
- 'Osteoglossiformes belongs to Osteichthyes'
- 'Ostraciidae belongs to Tetraodontiformes'
- 'Ostracion belongs to Ostraciidae'
- 'Otodus macrotus is recombined as Odontaspis macrota'
- 'Otodus rutoti belongs to Otodus' according to Winkler 1874
- 'Otodus rutoti is recombined as Odontaspis rutoti'
- 'Oxyrhina desorii praecursor is a subjective synonym of Oxyrhina praecursor americana' according to Leriche 1942
- 'Oxyrhina praecursor belongs to Oxyrhina' according to Leriche 1942
- 'Oxyrhina praecursor americana is recombined as Isurus praecursor americanus'
- 'Pachycormidae belongs to Amiiformes'
- 'Pachyrhizodontidae belongs to Elopoidei'
- 'Pachyrhizodus belongs to Pachyrhizodontidae'
- 'Pachyrhizodus caninus belongs to Pachyrhizodus' according to Cope 1872
- 'Pachyrhizodus caninus belongs to Pachyrhizodus'
- 'Pachyrhizodus kingi belongs to Pachyrhizodus' according to Cope 1872
- 'Pachyrhizodus kingi belongs to Pachyrhizodus'
- 'Palaeophidae belongs to Serpentes'
- 'Palelops belongs to Elopidae'
- 'Palelops eutawensis belongs to Palelops'
- 'Patriocetidae belongs to Mysticeti'
- 'Pelagodornithidae is corrected as Plegadornithidae and belongs to Ciconiae'
- 'Pelomedusidae belongs to Pleurodira'
- 'Perciformes belongs to Osteichthyes'
- 'Percoidea is corrected as Percoidei and belongs to Perciformes'
- 'Perissodactyla was reranked as a order and belongs to Mammalia'
- 'Petalodontidae belongs to Bradyodonti'
- 'Petalodus belongs to Petalodontidae'
- 'Phyllodus belongs to Labridae'
- 'Physodon belongs to Carcharhinidae'
- 'Pilosa belongs to Edentata'
- 'Platecarpus belongs to Plioplatecarpidae'
- 'Platecarpus somenensis belongs to Platecarpus' according to Thevenin 1896
- 'Platecarpus somenensis belongs to Platecarpus'
- 'Platecarpus tympaniticus belongs to Platecarpus'
- 'Plegadornis belongs to Plegadornithidae'
- 'Plegadornis antecessor [misspelled as Plegadornis anteccessor] belongs to Plegadornis'
- 'Plesiosauria was reranked as a suborder and belongs to Sauropterygia'
- 'Plesiosauroidea belongs to Plesiosauria'
- 'Pleurodira belongs to Chelonia'
- 'Plioplatecarpidae was reranked as the subfamily Plioplatecarpinae and belongs to Mosasauridae'
- 'Pliosauroidea belongs to Plesiosauria'
- 'Podocnemis alabamae is a subjective synonym of Bothremys barberi'
- 'Podocnemis barberi is recombined as Bothremys barberi'
- 'Podocnemis barberi belongs to Podocnemis' according to Schmidt 1940
- 'Polycotylidae belongs to Pliosauroidea'
- 'Polygonodon audax is recombined as Xiphactinus audax'
- 'Pontogeneus belongs to Basilosauridae'
- 'Pontogeneus priscus is a subjective synonym of Pontogeneus brachyspondylus'
- 'Prionochelys belongs to Lophochelyinae'
- 'Prionochelys matutina belongs to Prionochelys'
- 'Pristidae belongs to Pristioidea'
- 'Pristioidea belongs to Elasmobranchii'
- 'Pristis belongs to Pristidae'
- 'Proboscidea was reranked as a order and belongs to Mammalia'
- 'Prognathodon belongs to Plioplatecarpidae'
- 'Propenser belongs to Acipenseridae'
- 'Protoceratidae belongs to Ruminantia'
- 'Protohippus lenticularis is recombined as Nannippus lenticularis'
- 'Protosphyraena belongs to Pachycormidae'
- 'Protostega advena is recombined as Chelosphargis advena'
- 'Protostega dixie belongs to Protostega' according to Zangerl 1953
- 'Protostega dixie belongs to Protostega'
- 'Protostegidae belongs to Cryptodira'
- 'Psammodontidae belongs to Bradyodonti'
- 'Psammodus belongs to Psammodontidae'
- 'Pterosphenus belongs to Palaeophidae'
- 'Pterosphenus schucherti belongs to Pterosphenus'
- 'Ptychodontidae belongs to Hybodontoidea'
- 'Ptychodus belongs to Ptychodontidae'
- 'Ptychodus mortoni belongs to Ptychodus'
- 'Ptychodus polygyrus belongs to Ptychodus'
- 'Pycnodontes is corrected as Pycnodontidae and belongs to Pycnodontiformes'
- 'Pycnodontiformes belongs to Holostei'
- 'Quadropedia belongs to Seymouriamorpha'
- 'Quadropedia prima belongs to Quadropedia' according to Aldrich and Jones 1930
- 'Quadropedia prima [misspelled as Quadrupedia prima] belongs to Quadropedia'
- 'Raja belongs to Rajidae'
- 'Rajidae belongs to Rajoidea'
- 'Rajoidea belongs to Batoidea'
- 'Reptilia belongs to Vertebrata'
- 'Rhachitomi belongs to Amphibia'
- 'Rhinocerotidae belongs to Tapiromorpha'
- 'Rhinoptera belongs to Rhinopteridae'
- 'Rhinopteridae belongs to Myliobatoidea'
- 'Rhizoprionodon belongs to Carcharhinidae'
- 'Ruminantia belongs to Artiodactyla'
- 'Salmoniformes belongs to Osteichthyes'
- 'Sarcopterygii belongs to Osteichthyes'
- 'Saurischia belongs to Archosauria'
- 'Saurocephalidae belongs to Osteoglossiformes'
- 'Saurocephalus belongs to Saurocephalidae'
- 'Saurocephalus lanciformis belongs to Saurocephalus'
- 'Saurodon belongs to Saurocephalidae'
- 'Saurodon leanus belongs to Saurodon'
- 'Saurodontidae is a subjective synonym of Saurocephalidae'
- 'Sauropterygia was reranked as a order and belongs to Reptilia'
- 'Scapanorhynchus belongs to Odontaspidae'
- 'Scapanorhynchus rapax belongs to Scapanorhynchus' according to Quaas 1902
- 'Scapanorhynchus rapax belongs to Scapanorhynchus'
- 'Sciaenoidei was reranked as the family Sciaenidae and belongs to Percoidei'
- 'Scombroidei belongs to Perciformes'
- 'Scyliorhinidae belongs to Galeoidea'
- 'Scyliorhinus belongs to Scyliorhinidae'
- 'Scyliorhinus enniskilleni belongs to Scyliorhinus'
- 'Selachii belongs to Elasmobranchii'
- 'Semionotiformes belongs to Holostei'
- 'Semionotoidei belongs to Semionotiformes'
- 'Serpentes belongs to Reptilia'
- 'Seymouriamorpha belongs to Amphibia'
- 'Sirenia was reranked as a order and belongs to Mammalia'
- 'Sphyraena belongs to Sphyraenidae'
- 'Sphyraenidae belongs to Mugiloidei'
- 'Squalicorax belongs to Anacoracidae'
- 'Squamata belongs to Lepidosauria'
- 'Stratodus belongs to Dercetidae'
- 'Stratodus apicalis belongs to Stratodus'
- 'Synthetoceras belongs to Protoceratidae'
- 'Synthetoceras tricornatus belongs to Synthetoceras'
- 'Tapiromorpha belongs to Perissodactyla'
- 'Teleoceras belongs to Rhinocerotidae'
- 'Teleostei was reranked as a infraclass and belongs to Osteichthyes'
- 'Testudinidae belongs to Cryptodira'
- 'Tetraodontiformes belongs to Teleostei'
- 'Theropoda was reranked as a suborder and belongs to Saurischia'
- 'Thinochelys belongs to Toxochelyinae'
- 'Toxochelyidae belongs to Cryptodira'
- 'Toxochelyinae belongs to Toxochelyidae'
- 'Toxochelys belongs to Toxochelyinae'
- 'Toxochelys moorevillensis belongs to Toxochelys'
- 'Trichiuridae belongs to Scombroidei'
- 'Trichiurides belongs to Trichiuridae'
- 'Trichiurus belongs to Trichiuridae'
- 'Trigonodus secundus belongs to Trigonodus' according to Winkler 1876
- 'Trigonodus secundus is recombined as Physodon secundus'
- 'Trionychidae belongs to Cryptodira'
- 'Tylosaurinae belongs to Mosasauridae'
- 'Tylosaurus belongs to Tylosaurinae'
- 'Tylosaurus zangerli belongs to Tylosaurus'
- 'Ursidae belongs to Carnivora'
- 'Xiphactinus belongs to Ichthyodectidae'
- 'Zeuglodon brachyspondylus is recombined as Pontogeneus brachyspondylus'
- 'Zygorhiza minor is a subjective synonym of Zygorhiza kochii'
- 'Zeuglodon ceti is a subjective synonym of Basilosaurus cetoides'
- 'Zeuglodon cetoides is recombined as Basilosaurus cetoides'
- 'Zeuglodon harlani is a subjective synonym of Basilosaurus cetoides'
- 'Zeuglodon macrospondylus is a subjective synonym of Basilosaurus cetoides'
- 'Zygorhiza belongs to Dorudontidae'