Opinions from M. F. Ivakhnenko 2003
- 'Admetophoneus is a subjective synonym of Titanophoneus'
- 'Admetophoneus kargalensis belongs to Admetophoneus' according to Efremov 1954
- 'Admetophoneus kargalensis is a nomen dubium'
- 'Amalitzkia is a subjective synonym of Inostrancevia'
- 'Amalitzkia annae belongs to Amalitzkia' according to Pravoslavlev 1927
- 'Amalitzkia annae is a subjective synonym of Inostrancevia latifrons'
- 'Amalitzkia vladimiri is a subjective synonym of Inostrancevia latifrons'
- 'Anomodontia belongs to Dinomorpha'
- 'Anoplosuchus is a subjective synonym of Estemmenosuchus'
- 'Anoplosuchus tenuirostris is a subjective synonym of Estemmenosuchus uralensis'
- 'Anoplosuchus tenuirostris belongs to Anoplosuchus' according to Tchudinov 1968
- 'Anteosauridae belongs to Deuterosauroidea'
- 'Archaeosyodon belongs to Titanosuchidae'
- 'Archaeosyodon praeventor belongs to Archaeosyodon' according to Tchudinov 1960
- 'Archaeosyodon praeventor belongs to Archaeosyodon'
- 'Arctognathus progressus is recombined as Sauroctonus progressus'
- 'Australobarbarus belongs to Cryptodontidae'
- 'Australobarbarus kotelnitshi belongs to Australobarbarus'
- 'Australobarbarus platycephalus belongs to Australobarbarus'
- 'Biarmosaurus is a subjective synonym of Biarmosuchus'
- 'Biarmosaurus antecessor is a subjective synonym of Biarmosuchus tener'
- 'Biarmosuchoides belongs to Ictidorhinidae'
- 'Biarmosuchoides romanovi belongs to Biarmosuchoides'
- 'Biarmosuchus belongs to Eotitanosuchidae'
- 'Biarmosuchus antecessor is a subjective synonym of Biarmosuchus tener'
- 'Biarmosuchus tagax belongs to Biarmosuchus'
- 'Biarmosuchus tchudinovi belongs to Biarmosuchus' according to Ivakhnenko 1999
- 'Biarmosuchus tchudinovi belongs to Biarmosuchus'
- 'Biarmosuchus tener belongs to Biarmosuchus'
- 'Biseridensidae belongs to Titanosuchoidea'
- 'Burnetidae is corrected as Burnetiidae and belongs to Burnetioidea'
- 'Burnetioidea belongs to Estemmenosuchida'
- 'Cliorhizodon is a subjective synonym of Syodon'
- 'Cliorhizodon efremovi is recombined as Syodon efremovi'
- 'Cliorhizodon orenburgensis is a subjective synonym of Syodon biarmicum'
- 'Cryptodontia is corrected as Cryptodontidae and belongs to Dicynodontoidea'
- 'Delectosaurus belongs to Dicynodontidae'
- 'Delectosaurus arefjevi belongs to Delectosaurus'
- 'Deuterosauridae belongs to Deuterosauroidea'
- 'Deuterosauroidea belongs to Titanosuchida'
- 'Deuterosaurus belongs to Deuterosauridae'
- 'Deuterosaurus biarmicus belongs to Deuterosaurus' according to Eichwald 1846
- 'Deuterosaurus biarmicus belongs to Deuterosaurus'
- 'Deuterosaurus gigas is recombined as Ulemosaurus gigas'
- 'Dicynodon belongs to Dicynodontidae'
- 'Dicynodon amalitzkii belongs to Dicynodon'
- 'Dicynodon trautscholdi belongs to Dicynodon'
- 'Dicynodontia is corrected as Dicynodontia and belongs to Anomodontia'
- 'Dicynodontida belongs to Dicynodontia'
- 'Dicynodontidae belongs to Dicynodontoidea'
- 'Dicynodontoidea belongs to Dicynodontida'
- 'Dinocephalia belongs to Gorgodontia'
- 'Dinomorpha belongs to Eotherapsida'
- 'Dinosaurus belongs to Phthinosuchidae'
- 'Doliosaurus is replaced by Doliosauriscus' according to Kuhn 1961
- 'Doliosaurus adamanteus belongs to Doliosaurus' according to Orlov 1958
- 'Doliosaurus adamanteus is recombined as Titanophoneus adamanteus'
- 'Doliosaurus yanschinovi is a subjective synonym of Titanophoneus potens'
- 'Doliosaurus yanschinovi is recombined as Doliosauriscus yanschinovi' according to Kuhn 1961
- 'Dromasaurida belongs to Dicynodontia'
- 'Elph belongs to Dicynodontidae'
- 'Elph borealis belongs to Elph'
- 'Eotitanosuchida belongs to Dinocephalia'
- 'Eotitanosuchidae belongs to Eotitanosuchoidea'
- 'Eotitanosuchoidea belongs to Eotitanosuchida'
- 'Eotitanosuchus is a subjective synonym of Biarmosuchus'
- 'Eotitanosuchus olsoni is a subjective synonym of Biarmosuchus tener'
- 'Estemmenosuchida belongs to Gorgonopsia'
- 'Estemmenosuchidae belongs to Rhopalodontoidea'
- 'Estemmenosuchus belongs to Estemmenosuchidae'
- 'Estemmenosuchus mirabilis belongs to Estemmenosuchus' according to Tchudinov 1968
- 'Estemmenosuchus mirabilis belongs to Estemmenosuchus'
- 'Estemmenosuchus uralensis belongs to Estemmenosuchus' according to Chudinov 1960
- 'Estemmenosuchus uralensis belongs to Estemmenosuchus'
- 'Galeopsidae is corrected as Galeopidae and belongs to Dromasaurida'
- 'Gordonia annae is a subjective synonym of Dicynodon trautscholdi'
- 'Gordonia rossica is a subjective synonym of Dicynodon trautscholdi'
- 'Gorgodontia belongs to Dinomorpha'
- 'Gorgonopida belongs to Gorgonopsia'
- 'Gorgonopioidea belongs to Gorgonopida'
- 'Gorgonopsia belongs to Gorgodontia'
- 'Gorgonopsidae is corrected as Gorgonopidae and belongs to Gorgonopioidea'
- 'Gorgonopsinae belongs to Gorgonopidae'
- 'Ictidorhinida belongs to Gorgonopsia'
- 'Ictidorhinidae belongs to Ictidorhinida'
- 'Inostrancevia belongs to Inostranceviidae'
- 'Inostrancevia alexandri belongs to Inostrancevia'
- 'Inostrancevia latifrons belongs to Inostrancevia'
- 'Inostrancevia parva is recombined as Pravoslavlevia parva'
- 'Inostrancevia proclivis is a subjective synonym of Inostrancevia alexandri'
- 'Inostrancevia uralensis belongs to Inostrancevia'
- 'Inostranceviidae belongs to Rubidgeoidea'
- 'Interpresosaurus belongs to Dicynodontidae'
- 'Interpresosaurus blomi belongs to Interpresosaurus'
- 'Ivantosaurus is a subjective synonym of Biarmosuchus'
- 'Ivantosaurus ensifer is a subjective synonym of Biarmosuchus tener'
- 'Ivantosaurus signifer is a subjective synonym of Biarmosuchus tener'
- 'Kamagorgon belongs to Phthinosuchidae'
- 'Kamagorgon ulanovi belongs to Kamagorgon' according to Tatarinov 1999
- 'Kamagorgon ulanovi belongs to Kamagorgon'
- 'Lanthaniscus efremovi belongs to Lanthaniscus' according to Ivakhnenko 1980
- 'Leogorgon belongs to Rubidgeinae'
- 'Leogorgon klimovensis belongs to Leogorgon'
- 'Microsyodon belongs to Titanosuchidae'
- 'Microsyodon orlovi belongs to Microsyodon' according to Ivakhnenko 1995
- 'Microsyodon orlovi belongs to Microsyodon'
- 'Microurania belongs to Microuraniidae'
- 'Microurania mikia belongs to Microurania'
- 'Microurania minima belongs to Microurania'
- 'Microuraniidae belongs to Microuranioidea'
- 'Microuranioidea belongs to Eotitanosuchida'
- 'Mnemejosaurus is a subjective synonym of Deuterosaurus'
- 'Mnemejosaurus jubilaei is recombined as Deuterosaurus jubilaei'
- 'Mnemejosaurus jubilaei belongs to Mnemejosaurus' according to Nopcsa 1928
- 'Niaftasuchidae belongs to Niaftasuchoidea'
- 'Niaftasuchoidea belongs to Eotitanosuchida'
- 'Niaftasuchus belongs to Niaftasuchidae'
- 'Niaftasuchus zekkeli belongs to Niaftasuchus'
- 'Niuksenitia belongs to Burnetiidae'
- 'Niuksenitia sukhonensis belongs to Niuksenitia'
- 'Notosyodon gusevi is recombined as Syodon gusevi'
- 'Otsheria belongs to Venjukoviidae'
- 'Otsheria netzvetajevi belongs to Otsheria' according to Chudinov 1960
- 'Otsheria netzvetajevi belongs to Otsheria'
- 'Oudenodon rugosus belongs to Oudenodon' according to Trautschold 1884
- 'Oudenodon rugosus is recombined as Titanophoneus rugosus'
- 'Oudenodon venyukovi is a subjective synonym of Dicynodon trautscholdi'
- 'Parabradysaurus belongs to Rhopalodontidae'
- 'Parabradysaurus silantjevi belongs to Parabradysaurus' according to Ivakhnenko 1995
- 'Parabradysaurus silantjevi belongs to Parabradysaurus'
- 'Parabradysaurus udmurticus belongs to Parabradysaurus'
- 'Phthinosaurus belongs to Rhopalodontidae'
- 'Phthinosaurus borissiaki belongs to Phthinosaurus' according to Efremov 1940
- 'Phthinosaurus borissiaki belongs to Phthinosaurus'
- 'Phthinosuchidae belongs to Rubidgeoidea'
- 'Phthinosuchus is a subjective synonym of Dinosaurus'
- 'Phthinosuchus discors is a subjective synonym of Dinosaurus murchisoni'
- 'Pravoslavlevia belongs to Gorgonopsinae'
- 'Proburnetia belongs to Burnetiidae'
- 'Proburnetia viatkensis belongs to Proburnetia'
- 'Rhopalodon belongs to Rhopalodontidae'
- 'Rhopalodon murchisoni belongs to Rhopalodon' according to Fischer von Waldheim 1845
- 'Rhopalodon murchisoni is recombined as Dinosaurus murchisoni'
- 'Rhopalodon wangenheimi belongs to Rhopalodon' according to Seeley 1894
- 'Rhopalodon wangenheimi belongs to Rhopalodon'
- 'Rhopalodontidae belongs to Rhopalodontoidea'
- 'Rhopalodontoidea belongs to Estemmenosuchida'
- 'Rubidgeidae belongs to Rubidgeoidea'
- 'Rubidgeinae belongs to Rubidgeidae'
- 'Rubidgeoidea belongs to Gorgonopida'
- 'Sauroctonus belongs to Scylacopinae'
- 'Scylacopinae belongs to Gorgonopidae'
- 'Suchogorgon belongs to Scylacopinae'
- 'Suchogorgon golubevi belongs to Suchogorgon' according to Tatarinov 2000
- 'Suchogorgon golubevi belongs to Suchogorgon'
- 'Suminia belongs to Galeopidae'
- 'Suminia getmanovi belongs to Suminia'
- 'Syodon belongs to Syodontidae'
- 'Syodon biarmicum belongs to Syodon'
- 'Syodontidae belongs to Titanosuchoidea'
- 'Tapinocephalia is corrected as Tapinocephalida and belongs to Dinocephalia'
- 'Tapinocephaloidea belongs to Tapinocephalida'
- 'Titanophoneus belongs to Anteosauridae'
- 'Titanophoneus potens belongs to Titanophoneus'
- 'Titanosuchia is corrected as Titanosuchida and belongs to Dinocephalia'
- 'Titanosuchidae belongs to Titanosuchoidea'
- 'Titanosuchoidea belongs to Titanosuchida'
- 'Ulemica belongs to Ulemicidae'
- 'Ulemica efremovi belongs to Ulemica' according to Ivakhnenko 1996
- 'Ulemicia belongs to Anomodontia'
- 'Ulemicidae belongs to Ulemicia'
- 'Ulemosauridae belongs to Tapinocephaloidea'
- 'Ulemosaurus belongs to Ulemosauridae'
- 'Ulemosaurus minutus belongs to Ulemosaurus' according to Vjuschkov 1955
- 'Ulemosaurus minutus is a nomen dubium'
- 'Ulemosaurus svijagensis belongs to Ulemosaurus'
- 'Uraniscosaurus is an objective synonym of Mnemejosaurus'
- 'Uraniscosaurus watsoni belongs to Uraniscosaurus' according to Nopcsa 1928
- 'Uraniscosaurus watsoni is an objective synonym of Mnemejosaurus jubilaei'
- 'Ustia belongs to Ictidorhinidae'
- 'Ustia atra belongs to Ustia'
- 'Venjukovia invisa is recombined as Ulemica invisa'
- 'Venjukoviidae is corrected as Venyukoviidae and belongs to Ulemicia'
- 'Venyukovia belongs to Venjukoviidae'
- 'Venyukovia prima belongs to Venyukovia'
- 'Venyukovia prima belongs to Venyukovia' according to Amalitzky 1922
- 'Viatkogorgon belongs to Phthinosuchidae'
- 'Viatkogorgon ivakhnenkoi belongs to Viatkogorgon'
- 'Viatkogorgon ivakhnenkoi belongs to Viatkogorgon' according to Tatarinov 1999
- 'Vivaxosaurus belongs to Dicynodontidae'
- 'Vivaxosaurus permirus belongs to Vivaxosaurus'
- 'Zopherosuchus is a subjective synonym of Estemmenosuchus'
- 'Zopherosuchus luceus is a subjective synonym of Estemmenosuchus uralensis'