Opinions from X. Wang 1994
- 'Alloeodectes is a subjective synonym of Hesperocyon'
- 'Alloeodectes is a subjective synonym of Hesperocyon' according to H. Bryant 1991
- 'Amphicyon angustidens is a nomen vanum'
- 'Amphicyon gracilis is a subjective synonym of Hesperocyon gregarius'
- 'Amphicyon gracilis belongs to Amphicyon' according to Pomel 1847
- 'Brachyrhynchocyon douglasi is a subjective synonym of Cynodesmus thooides'
- 'Brachyrhynchocyon sesnoni is recombined as Osbornodon sesnoni'
- 'Caedocyon belongs to Hesperocyoninae'
- 'Caedocyon tedfordi belongs to Caedocyon'
- 'Canidae belongs to Cynoidea'
- 'Caniformia belongs to Carnivora'
- 'Canis brachypus is recombined as Osbornodon brachypus'
- 'Canis gregarius is recombined as Hesperocyon gregarius'
- 'Canis lippincottianus is a nomen dubium'
- 'Cynodesmus belongs to Hesperocyoninae'
- 'Cynodesmus canavus is recombined as Tomarctus canavus'
- 'Cynodesmus casei is a subjective synonym of Cynarctus kelloggi'
- 'Cynodesmus cuspidatus is a subjective synonym of Carpocyon compressus'
- 'Cynodesmus euthos is recombined as Tomarctus euthos'
- 'Cynodesmus martini belongs to Cynodesmus'
- 'Cynodesmus minor is recombined as Phlaocyon minor'
- 'Cynodesmus nobilis is a subjective synonym of Osbornodon iamonensis'
- 'Cynodesmus petersoni is a nomen nudum'
- 'Cynodesmus petersoni belongs to Cynodesmus' according to Radinsky 1973
- 'Cynodesmus thomsoni is recombined as Tomarctus thomsoni'
- 'Cynodesmus thooides belongs to Cynodesmus'
- 'Cynodictis paterculus is a subjective synonym of Hesperocyon gregarius'
- 'Cynodictis temnodon is recombined as Mesocyon temnodon'
- 'Cynoidea belongs to Caniformia'
- 'Ectopocynus belongs to Hesperocyoninae'
- 'Ectopocynus antiquus belongs to Ectopocynus'
- 'Ectopocynus intermedius belongs to Ectopocynus'
- 'Ectopocynus simplicidens belongs to Ectopocynus'
- 'Enhydrocyon belongs to Hesperocyoninae'
- 'Enhydrocyon basilatus belongs to Enhydrocyon'
- 'Enhydrocyon crassidens belongs to Enhydrocyon'
- 'Enhydrocyon oregonensis is a subjective synonym of Enhydrocyon stenocephalus'
- 'Enhydrocyon stenocephalus belongs to Enhydrocyon'
- 'Hesperocyon belongs to Hesperocyoninae'
- 'Hesperocyon coloradensis belongs to Hesperocyon'
- 'Hesperocyon wilsoni is recombined as Prohesperocyon wilsoni'
- 'Hesperocyoninae belongs to Canidae'
- 'Hyaenocyon is a subjective synonym of Enhydrocyon'
- 'Hyaenocyon sectorius is a nomen vanum'
- 'Hyaenocyon sectorius is a subjective synonym of Enhydrocyon basilatus' according to Thorpe 1922
- 'Hypotemnodon is a subjective synonym of Mesocyon'
- 'Mesocyon belongs to Hesperocyoninae'
- 'Mesocyon baileyi is a subjective synonym of Mesocyon brachyops'
- 'Mesocyon brachyops belongs to Mesocyon'
- 'Mesocyon drummondanus is a subjective synonym of Cynodesmus thooides'
- 'Mesocyon drummondanus is recombined as Daphoenus drummondanus' according to Schlaikjer 1935
- 'Mesocyon geringensis is recombined as Sunkahetanka geringensis'
- 'Mesocyon hortulirosae is a subjective synonym of Paraenhydrocyon josephi'
- 'Mesocyon iamonensis is recombined as Osbornodon iamonensis'
- 'Mesocyon josephi secundus belongs to Mesocyon josephi' according to Thorpe 1922
- 'Mesocyon josephi secundus is an invalid subgroup of Mesocyon coryphaeus'
- 'Mesocyon robustus is recombined as Paraenhydrocyon robustus'
- 'Miacis gracilis is a subjective synonym of Procynodictis vulpiceps'
- 'Nanodelphys mcgrewi is a subjective synonym of Hesperocyon gregarius'
- 'Nanodelphys mcgrewi is a subjective synonym of Hesperocyon' according to H. Bryant 1991
- 'Nothocyon vulpinus is recombined as Leptocyon vulpinus'
- 'Osbornodon belongs to Hesperocyoninae'
- 'Osbornodon fricki belongs to Osbornodon'
- 'Osbornodon renjiei belongs to Osbornodon'
- 'Paradaphoenus tropicalis is a subjective synonym of Osbornodon iamonensis'
- 'Paraenhydrocyon belongs to Hesperocyoninae'
- 'Philotrox belongs to Hesperocyoninae'
- 'Philotrox condoni belongs to Philotrox'
- 'Prohesperocyon belongs to Canidae'
- 'Pseudocynodictis is a subjective synonym of Hesperocyon'
- 'Pseudocynodictis pavidus is recombined as Hesperocyon pavidus'
- 'Sunkahetanka belongs to Hesperocyoninae'
- 'Sunkahetanka pahinsintewakpa is recombined as Enhydrocyon pahinsintewakpa'
- 'Sunkahetanka sheffleri is a subjective synonym of Cynodesmus thooides'
- 'Temnocyon coryphaeus is recombined as Mesocyon coryphaeus'
- 'Temnocyon josephi is recombined as Paraenhydrocyon josephi'
- 'Temnocyon venator is a subjective synonym of Paraenhydrocyon wallovianus'
- 'Temnocyon wallovianus is recombined as Paraenhydrocyon wallovianus'
- 'Tephrocyon kelloggi is recombined as Cynarctus kelloggi'
- 'Tephrocyon scitulus is a subjective synonym of Osbornodon iamonensis'