Opinions from L. Krishtalka and R. K. Stucky 1983
- 'Armintodelphys belongs to Peradectini'
- 'Armintodelphys blacki belongs to Armintodelphys'
- 'Armintodelphys dawsoni belongs to Armintodelphys'
- 'Centracodon is a subjective synonym of Peratherium'
- 'Centracodon delicatus is a subjective synonym of Peratherium knighti'
- 'Didelphinae belongs to Didelphidae'
- 'Didelphini belongs to Didelphinae'
- 'Didelphys pygmaea is a subjective synonym of Peratherium fugax'
- 'Entomacodon is a subjective synonym of Peratherium'
- 'Entomacodon belongs to Didelphidae' according to Marsh 1872
- 'Entomacodon minutus is a subjective synonym of Peratherium knighti'
- 'Herpetotherium belongs to Didelphidae' according to Crochet 1977
- 'Herpetotherium belongs to Didelphini'
- 'Herpetotherium belongs to Didelphidae' according to Crochet 1980
- 'Herpetotherium fuzax [misspelled as Herpetotherium fuzax] belongs to Herpetotherium'
- 'Herpetotherium huntii is a subjective synonym of Herpetotherium fuzax'
- 'Herpetotherium marsupium is recombined as Peratherium marsupium'
- 'Herpetotherium stevensonii is a subjective synonym of Herpetotherium fuzax'
- 'Nanodelphys is a subjective synonym of Peradectes'
- 'Nanodelphys is a subjective synonym of Peradectes' according to Crochet 1980
- 'Nanodelphys is a subjective synonym of Peradectes' according to Bown 1979
- 'Nanodelphys is a subjective synonym of Peradectes' according to Crochet 1978
- 'Nanodelphys belongs to Didelphidae' according to McGrew 1937
- 'Nanodelphys mcgrewi is recombined as Peradectes mcgrewi'
- 'Nanodelphys mcgrewi is recombined as Peradectes mcgrewi' according to Crochet 1980
- 'Nanodelphys mcgrewi is recombined as Peradectes mcgrewi' according to Bown 1979
- 'Nanodelphys mcgrewi is recombined as Peradectes mcgrewi' according to Crochet 1978
- 'Nanodelphys minutus is recombined as Peradectes minutus'
- 'Nanodelphys minutus is recombined as Peradectes minutus' according to Crochet 1980
- 'Nanodelphys minutus is recombined as Peradectes minutus' according to Bown 1979
- 'Nanodelphys minutus is recombined as Peradectes minutus' according to Crochet 1978
- 'Nanodelphys minutus belongs to Nanodelphys' according to McGrew 1937
- 'Peradectes belongs to Peradectini'
- 'Peradectes protinnominatus is a subjective synonym of Peratherium chesteri' according to Bown 1979
- 'Peradectes protinnominatus is a subjective synonym of Peratherium chesteri' according to Setoguchi 1973
- 'Peradectes protinnominatus belongs to Peradectes'
- 'Peradectinae was reranked as the tribe Peradectini and belongs to Didelphinae'
- 'Peratherium belongs to Didelphini'
- 'Peratherium californicum is recombined as Peradectes californicus'
- 'Peratherium chesteri is recombined as Peradectes chesteri'
- 'Peratherium chesteri is recombined as Peradectes chesteri' according to Bown 1979
- 'Peratherium chesteri is recombined as Peradectes chesteri' according to Setoguchi 1973
- 'Peratherium chesteri is recombined as Herpetotherium chesteri' according to Crochet 1978
- 'Peratherium comstocki belongs to Peratherium'
- 'Peratherium comstocki is recombined as Herpetotherium comstocki' according to Crochet 1979
- 'Peratherium comstocki belongs to Peratherium' according to Cope 1884
- 'Peratherium edwardi belongs to Peratherium'
- 'Peratherium innominatum belongs to Peratherium'
- 'Peratherium macgrewi is a subjective synonym of Peratherium innominatum'
- 'Peratherium macgrewi belongs to Peratherium' according to Bown 1979
- 'Peratherium morrisi is a subjective synonym of Peratherium knighti'
- 'Peratherium morrisi is recombined as Peradectes morrisi' according to Setoguchi 1973
- 'Thylacodon belongs to Didelphidae'
- 'Thylacodon pusillus belongs to Thylacodon'