Opinions from F. S. Szalay 1969
- 'Bathrodon is a subjective synonym of Microsyops'
- 'Bathrodon annectens is recombined as Microsyops annectens'
- 'Bathrodon typus is a subjective synonym of Microsyops elegans'
- 'Bessoecetor is a subjective synonym of Propalaeosinopa'
- 'Cynodontomys is a subjective synonym of Microsyops'
- 'Cynodontomys alfi is recombined as Microsyops alfi'
- 'Cynodontomys angustidens is recombined as Microsyops angustidens'
- 'Cynodontomys knightensis is a subjective synonym of Microsyops latidens'
- 'Cynodontomys latidens is recombined as Microsyops latidens'
- 'Cynodontomys lundeliusi is recombined as Microsyops lundeliusi'
- 'Elpidophorus minutulus is recombined as Leptacodon minutulus'
- 'Elpidophorus minutulus belongs to Elpidophorus' according to Dorr 1958
- 'Elpidophorus patratus is a subjective synonym of Elpidophorus elegans'
- 'Indrodon is a subjective synonym of Mixodectes'
- 'Indrodon malaris is recombined as Mixodectes malaris'
- 'Limnotherium elegans is recombined as Microsyops elegans'
- 'Mckennatherium libitum is a subjective synonym of Leptacodon ladae'
- 'Mesacodon is a subjective synonym of Microsyops'
- 'Mesacodon speciosus is a subjective synonym of Microsyops elegans'
- 'Microsyops gracilis is a subjective synonym of Microsyops elegans'
- 'Microsyops gracilis belongs to Microsyops' according to Leidy 1872
- 'Microsyops schlosseri is a subjective synonym of Microsyops annectens'
- 'Microsyops scottianus belongs to Microsyops'
- 'Microsyops wilsoni belongs to Microsyops'
- 'Mixodectes crassiusculus is a subjective synonym of Mixodectes pungens'
- 'Navajovius mckennai belongs to Navajovius'
- 'Notharctus cingulatus is a subjective synonym of Microsyops latidens'
- 'Notharctus palmidens is a subjective synonym of Microsyops latidens'
- 'Olbodotes is a subjective synonym of Mixodectes'
- 'Olbodotes copei is a subjective synonym of Mixodectes pungens'
- 'Palaeacodon is a subjective synonym of Microsyops'
- 'Palaeacodon verus is a subjective synonym of Microsyops elegans'
- 'Palaechthon belongs to Palaechthonini'
- 'Palaechthonini belongs to Paromomyidae'
- 'Palenochtha belongs to Palaechthonini'
- 'Pantolestes nuptus is a nomen oblitum'
- 'Pantolestes nuptus is recombined as Cynodontomys nuptus' according to Guthrie 1967
- 'Plesiolestes belongs to Palaechthonini'
- 'Remiculus belongs to Mixodectidae'
- 'Remiculus deutschi belongs to Remiculus' according to D. E. Russell 1964
- 'Remiculus deutschi belongs to Remiculus'