Opinions from A. E. Wood 1962
- 'Franimys belongs to Ischyromyidae'
- 'Franimys amherstensis belongs to Franimys'
- 'Ischyrotomus gidleyi is recombined as Reithroparamys gidleyi'
- 'Ischyrotomus horribilis belongs to Ischyrotomus'
- 'Ischyrotomus oweni belongs to Ischyrotomus'
- 'Ischyrotomus tapensis is recombined as Tapomys tapensis'
- 'Leptotomus bridgerensis belongs to Leptotomus'
- 'Leptotomus burkei is recombined as Mytonomys burkei'
- 'Leptotomus burkei is recombined as Mytonomys burkei' according to A. Wood 1956
- 'Leptotomus costilloi belongs to Leptotomus'
- 'Leptotomus grandis belongs to Leptotomus'
- 'Leptotomus huerfanensis belongs to Leptotomus'
- 'Leptotomus loomisi belongs to Leptotomus'
- 'Leptotomus mytonensis belongs to Leptotomus'
- 'Lophiparamys belongs to Ischyromyidae'
- 'Lophiparamys debequensis belongs to Lophiparamys'
- 'Manitshini was reranked as the subfamily Manitshinae and belongs to Paramyidae'
- 'Microparamys cathedralis belongs to Microparamys'
- 'Microparamys lysitensis belongs to Microparamys'
- 'Microparamys wilsoni belongs to Microparamys'
- 'Paramys atwateri is recombined as Reithroparamys atwateri'
- 'Paramys atwateri belongs to Paramys' according to Loomis 1907
- 'Paramys bicuspis is a subjective synonym of Paramys copei'
- 'Paramys compressidens is recombined as Ischyrotomus compressidens'
- 'Paramys delicatior belongs to Paramys'
- 'Paramys delicatior is recombined as Plesiarctomys delicatior' according to Cope 1877
- 'Paramys delicatior belongs to Paramys' according to Leidy 1871
- 'Paramys delicatissimus is recombined as Reithroparamys delicatissimus'
- 'Paramys francesi belongs to Paramys'
- 'Paramys grangeri is a subjective synonym of Leptotomus leptodus'
- 'Paramys huerfanensis belongs to Paramys'
- 'Paramys leptodus is recombined as Leptotomus leptodus'
- 'Paramys leptodus is recombined as Leptotomus leptodus' according to R. Wilson 1949
- 'Paramys major is a subjective synonym of Paramys copei'
- 'Paramys major belongs to Paramys' according to Loomis 1907
- 'Paramys medius is recombined as Thisbemys medius'
- 'Paramys minutus is recombined as Microparamys minutus'
- 'Paramys murinus belongs to Paramys' according to Matthew 1918
- 'Paramys murinus is recombined as Lophiparamys murinus'
- 'Paramys petersoni is recombined as Ischyrotomus petersoni'
- 'Paramys primaevus is a subjective synonym of Paramys copei'
- 'Paramys quadratus is a subjective synonym of Paramys copei'
- 'Paramys relictus is recombined as Prosciurus relictus'
- 'Paramys robustus is recombined as Pseudotomus robustus'
- 'Paramys superbus is recombined as Ischyrotomus superbus'
- 'Paramys superbus is recombined as Pseudotomus superbus' according to R. Wilson 1949
- 'Paramys tricus is recombined as Microparamys tricus'
- 'Paramys uintensis is recombined as Thisbemys uintensis'
- 'Paramys wortmani belongs to Paramys'
- 'Plesiarctomys buccatus is recombined as Franimys buccatus'
- 'Plesiarctomys buccatus is recombined as Paramys buccatus' according to R. Wilson 1949
- 'Plesiarctomys sciuroides is recombined as Leptotomus sciuroides'
- 'Plesiarctomys sciuroides is recombined as Paramys sciuroides' according to R. Wilson 1949
- 'Prosciurus robustus is recombined as Mytonomys robustus'
- 'Pseudotomus belongs to Manitshinae'
- 'Pseudotomus coloradensis belongs to Pseudotomus'
- 'Pseudotomus hians belongs to Pseudotomus'
- 'Reithroparamys debequensis belongs to Reithroparamys'
- 'Reithroparamys huerfanensis belongs to Reithroparamys'
- 'Reithroparamys matthewi belongs to Reithroparamys'
- 'Reithroparamys pattersoni belongs to Reithroparamys'
- 'Sciurus (Prosciurus) vetustus belongs to Sciurus (Prosciurus)'
- 'Sciurus jeffersoni is recombined as Cedromus jeffersoni'
- 'Sciurus saskatchewaensis is recombined as Prosciurus saskatchewaensis'
- 'Tapomys belongs to Ischyromyidae'
- 'Thisbemys nini belongs to Thisbemys'
- 'Thisbemys perditus belongs to Thisbemys'
- 'Thisbemys plicatus belongs to Thisbemys'
- 'Uriscus belongs to Reithroparamyidae'
- 'Uriscus californicus belongs to Uriscus'