Opinions from A. W. Keyser 1975
- 'Dicynodon allani is a subjective synonym of Oudenodon bainii'
- 'Dicynodon andrewsi is a subjective synonym of Oudenodon bainii'
- 'Dicynodon brachyrhynchus is a subjective synonym of Oudenodon bainii'
- 'Dicynodon breviceps is a subjective synonym of Oudenodon bainii'
- 'Dicynodon corstorphinei is a subjective synonym of Oudenodon bainii'
- 'Dicynodon curtus is a subjective synonym of Oudenodon bainii'
- 'Dicynodon cyclops is a subjective synonym of Oudenodon bainii'
- 'Dicynodon euryceps is a subjective synonym of Oudenodon luangwanensis'
- 'Oudenodon glaucops is a subjective synonym of Oudenodon bainii'
- 'Dicynodon grandis is recombined as Oudenodon grandis'
- 'Oudenodon halli is a subjective synonym of Oudenodon bainii'
- 'Dicynodon helenae is a subjective synonym of Oudenodon luangwanensis'
- 'Dicynodon huenie is recombined as Anomodon huenei'
- 'Oudenodon latirostris is a subjective synonym of Oudenodon bainii'
- 'Dicynodon luangwanensis is recombined as Oudenodon luangwanensis'
- 'Dicynodon lutriceps is a subjective synonym of Oudenodon bainii'
- 'Dicynodon maccabei is a subjective synonym of Oudenodon bainii'
- 'Aulacocephalodon milletti is a subjective synonym of Oudenodon bainii'
- 'Dicynodon moutonae is a subjective synonym of Oudenodon bainii'
- 'Dicynodon parabreviceps is a subjective synonym of Oudenodon luangwanensis'
- 'Oudenodon planus is a subjective synonym of Oudenodon bainii'
- 'Oudenodon platyceps is a subjective synonym of Oudenodon bainii'
- 'Oudenodon platyfrons is a subjective synonym of Oudenodon bainii'
- 'Dicynodon robertsi is a subjective synonym of Oudenodon bainii'
- 'Dicynodon schwarzi is a subjective synonym of Oudenodon bainii'
- 'Oudenodon strigiceps is a nomen dubium'
- 'Dicynodon tylorhinus is recombined as Propelanomodon tylorhinus'
- 'Dicynodon vanderbyli is a subjective synonym of Oudenodon bainii'
- 'Dicynodon wellwoodensis is a subjective synonym of Oudenodon bainii'
- 'Oudenodon wilmanae is a subjective synonym of Oudenodon bainii'
- 'Eocyclops longus is a subjective synonym of Rhachiocephalus magnus'
- 'Megacyclops rugosus is a subjective synonym of Rhachiocephalus magnus'
- 'Megacyclops whaitsi is a subjective synonym of Rhachiocephalus magnus'
- 'Neomegacyclops cyclops is a subjective synonym of Rhachiocephalus magnus'
- 'Oudenodon brevirostris is a subjective synonym of Oudenodon bainii'
- 'Dicynodon greyii is a subjective synonym of Oudenodon bainii'
- 'Dicynodon kolbei is a subjective synonym of Oudenodon bainii'
- 'Oudenodon magnus is recombined as Rhachiocephalus magnus'
- 'Dicynodon megalops is a subjective synonym of Oudenodon bainii'
- 'Dicynodon prognathus is a subjective synonym of Oudenodon bainii'
- 'Dicynodon truncatus is a nomen dubium'
- 'Platycyclops crassus is a subjective synonym of Rhachiocephalus magnus'
- 'Rhachiocephalus haughtoni is a subjective synonym of Rhachiocephalus magnus'
- 'Propelanomodon devilliersi is a subjective synonym of Propelanomodon tylorhinus'