Opinions from F. Ameghino 1902
- 'Arctotherium belongs to Ursidae'
- 'Arctotherium tarijense belongs to Arctotherium'
- 'Arctotherium wingei belongs to Arctotherium'
- 'Auchenia castelnaudi belongs to Auchenia' according to Gervais 1854
- 'Auchenia castelnaudi is recombined as Palaeolama castelnaudi'
- 'Auchenia weddelli is recombined as Palaeolama weddelli'
- 'Canis belongs to Canidae'
- 'Canis proplatensis belongs to Canis' according to Ameghino 1891
- 'Canis proplatensis belongs to Canis'
- 'Cavia capybara is recombined as Hydrochoerus capybara'
- 'Caviidae belongs to Rodentia'
- 'Cervus belongs to Cervidae'
- 'Cervus (Furcifer) is reassigned into Hippocamelus'
- 'Cervus percultus belongs to Cervus'
- 'Cervus tuberculatus belongs to Cervus' according to H. Gervais and F. Ameghino 1880
- 'Cervus tuberculatus belongs to Cervus'
- 'Ctenomys belongs to Octodontidae'
- 'Ctenomys brachyrhinus belongs to Ctenomys'
- 'Ctenomys subassentiens belongs to Ctenomys'
- 'Ctenomys subquadratus belongs to Ctenomys'
- 'Dasypus belongs to Dasypidae'
- 'Dasypus tarijensis belongs to Dasypus'
- 'Felis belongs to Felidae'
- 'Felis platensis belongs to Felis'
- 'Glyptodon belongs to Glyptodontidae'
- 'Glyptodon reticulatus belongs to Glyptodon'
- 'Hippocamelus belongs to Cervidae'
- 'Hippocamelus (Furcifer) incognitus belongs to Hippocamelus (Furcifer)'
- 'Hydrochoerus belongs to Caviidae'
- 'Hydrochoerus tarijensis belongs to Hydrochoerus'
- 'Lestodon belongs to Mylodontidae'
- 'Lestodon armatus belongs to Lestodon'
- 'Machairodus is corrected as Machaerodus and belongs to Felidae'
- 'Matyoscor belongs to Myocastoridae'
- 'Matyoscor perditus belongs to Matyoscor'
- 'Megatheriadae is corrected as Megatheriidae and belongs to Edentata'
- 'Megatherium belongs to Megatheriidae'
- 'Megatherium filholi belongs to Megatherium' according to F. Moreno 1888
- 'Megatherium filholi is a subjective synonym of Megatherium tarijense'
- 'Megatherium tarijense belongs to Megatherium'
- 'Myocastorinae was reranked as the family Myocastoridae and belongs to Rodentia'
- 'Octodontidae belongs to Rodentia'
- 'Palaeocyon belongs to Canidae'
- 'Palaeocyon tarijensis belongs to Palaeocyon'
- 'Palaeolama belongs to Camelidae'
- 'Pseudolestodon belongs to Mylodontidae'
- 'Pseudolestodon tarijensis belongs to Pseudolestodon'
- 'Smilodon ensenadensis belongs to Smilodon' according to Ameghino 1888
- 'Smilodon ensenadensis is recombined as Machaerodus ensenadensis' according to Ameghino 1889
- 'Smilodon ensenadensis is recombined as Machaerodus ensenadensis'
- 'Taperidae is corrected as Tapiridae and belongs to Ungulata'
- 'Tapirus belongs to Tapiridae'
- 'Tapirus tarijensis belongs to Tapirus'
- 'Ursidae belongs to Carnivora'