Opinions from R. Owen 1871
- 'Achyrodon belongs to Marsupialia'
- 'Achyrodon nanus belongs to Achyrodon'
- 'Achyrodon pusillus belongs to Achyrodon'
- 'Amblotherium belongs to Marsupialia'
- 'Amblotherium mustelula belongs to Amblotherium'
- 'Amblotherium soricinum belongs to Amblotherium'
- 'Amphigonus is a subjective synonym of Amphitherium'
- 'Amphitherium belongs to Marsupialia'
- 'Amphitherium broderipii is recombined as Amphilestes broderipii'
- 'Amphitherium prevostii belongs to Amphitherium'
- 'Bolodon belongs to Mammalia'
- 'Didelphys bucklandi is recombined as Phascolotherium bucklandi'
- 'Hypsiprymnopsis rhaeticus is recombined as Microlestes rhaeticus'
- 'Leptocladus dubius belongs to Leptocladus'
- 'Microlestes belongs to Marsupialia'
- 'Microlestes antiquus belongs to Microlestes' according to Plieninger 1847
- 'Microlestes antiquus belongs to Microlestes'
- 'Peralestes belongs to Marsupialia'
- 'Peramus belongs to Marsupialia'
- 'Peramus minor belongs to Peramus'
- 'Peraspalax belongs to Marsupialia'
- 'Phascolestes longirostris belongs to Phascolestes'
- 'Phascolotherium belongs to Marsupialia'
- 'Plagiaulax belongs to Marsupialia'
- 'Plagiaulax falconeri belongs to Plagiaulax'
- 'Plagiaulax medius belongs to Plagiaulax'
- 'Plagiaulax minor belongs to Plagiaulax' according to Falconer 1857
- 'Spalacotherium belongs to Marsupialia'
- 'Spalacotherium minus belongs to Spalacotherium'
- 'Spalacotherium tricuspidens belongs to Spalacotherium'
- 'Stereognathus belongs to Marsupialia'
- 'Stereognathus ooliticus belongs to Stereognathus' according to Charlesworth 1854
- 'Stereognathus ooliticus belongs to Stereognathus'
- 'Stylodon belongs to Marsupialia'
- 'Stylodon pusillus belongs to Stylodon' according to Owen 1866
- 'Stylodon pusillus belongs to Stylodon'
- 'Stylodon robustus belongs to Stylodon' according to Owen 1866
- 'Stylodon robustus belongs to Stylodon'
- 'Thylacotherium is a subjective synonym of Amphitherium'
- 'Triacanthodon belongs to Marsupialia'
- 'Triacanthodon serrula belongs to Triacanthodon'
- 'Triconodon belongs to Marsupialia'
- 'Triconodon ferox belongs to Triconodon'
- 'Triconodon major belongs to Triconodon'
- 'Triconodon minor belongs to Triconodon'
- 'Triconodon occisor belongs to Triconodon'