Opinions from M. W. Colbert 2005
- 'Breviodontidae belongs to Tapiromorpha'
- 'Cardiolophus belongs to Tapiromorpha'
- 'Ceratomorpha was reranked as a unranked clade and belongs to Tapiromorpha'
- 'Colodon belongs to Tapiridae'
- 'Dilophodon belongs to Tapiridae'
- 'Elasmognathus bairdii belongs to Elasmognathus' according to Gill 1865
- 'Elasmognathus bairdii is recombined as Tapirus bairdii'
- 'Helaletes belongs to Tapiroidea'
- 'Heptodon belongs to Tapiroidea'
- 'Heteraletes belongs to Tapiridae'
- 'Hippopotamus terrestris is recombined as Tapirus terrestris'
- 'Homogalax belongs to Tapiromorpha'
- 'Isectolophus belongs to Tapiromorpha'
- 'Kalakotia belongs to Tapiromorpha'
- 'Lophialetidae belongs to Tapiromorpha'
- 'Miotapirus belongs to Tapiridae'
- 'Nexuotapirus belongs to Tapiridae'
- 'Paratapirus belongs to Tapiridae'
- 'Plesiocolopirus belongs to Tapiridae'
- 'Plesiotapirus belongs to Tapiridae'
- 'Protapirus belongs to Tapiridae'
- 'Protapirus simplex belongs to Protapirus'
- 'Protapirus validus is a subjective synonym of Protapirus simplex'
- 'Rhinoceros unicornis belongs to Rhinoceros'
- 'Rhinocerotoidea belongs to Ceratomorpha'
- 'Rhodopagidae belongs to Tapiromorpha'
- 'Taperidae is corrected as Tapiridae and belongs to Tapiroidea'
- 'Tapiroidea belongs to Ceratomorpha'
- 'Tapirus belongs to Tapiridae'
- 'Tapirus indicus belongs to Tapirus'
- 'Tapirus pinchaque belongs to Tapirus' according to Roulin 1829
- 'Tapirus pinchaque belongs to Tapirus'
- 'Teleolophus belongs to Tapiridae'