Opinions from A. E. Zurita et al. 2004
- 'Amerhippus was reranked as Equus (Amerhippus) and belongs to Equus'
- 'Anancinae belongs to Gomphotheriidae'
- 'Cervus brachyceros belongs to Cervus' according to H. Gervais and F. Ameghino 1880
- 'Cervus brachyceros is recombined as Morenelaphus brachyceros' according to Carette 1922
- 'Cervus brachyceros is recombined as Morenelaphus brachyceros'
- 'Dasypodina is corrected as Dasypodini and belongs to Dasypodinae'
- 'Dasypodinae belongs to Dasypodidae'
- 'Equus andium is recombined as Equus (Amerhippus) andium'
- 'Equus neogaeus belongs to Equus' according to Lund 1840
- 'Equus neogaeus is recombined as Equus (Amerhippus) neogeus'
- 'Glyptodon belongs to Glyptodontinae'
- 'Glyptodon clavipes belongs to Glyptodon'
- 'Glyptodon ornatus belongs to Glyptodon' according to R. Owen 1845
- 'Glyptodon ornatus is recombined as Neosclerocalyptus ornatus' according to Paula Couto 1957
- 'Glyptodon ornatus is recombined as Neosclerocalyptus ornatus'
- 'Glyptodon tuberculatus belongs to Glyptodon' according to R. Owen 1845
- 'Glyptodon tuberculatus is recombined as Panochthus tuberculatus' according to Burmeister 1866
- 'Glyptodon tuberculatus is recombined as Panochthus tuberculatus'
- 'Glyptodontinae belongs to Glyptodontidae'
- 'Hoplophoridae was reranked as the subfamily Hoplophorinae and belongs to Glyptodontidae'
- 'Hoplophorini belongs to Hoplophorinae'
- 'Hoplophorus heusseri is recombined as Neosclerocalyptus heusseri'
- 'Lestodon belongs to Mylodontinae'
- 'Lestodon armatus belongs to Lestodon'
- 'Machairodontinae belongs to Felidae'
- 'Mastodon (Tetralophodon) mirificus is recombined as Stegomastodon mirificus'
- 'Mastodon platensis belongs to Mastodon' according to Ameghino 1888
- 'Mastodon platensis is recombined as Stegomastodon platensis'
- 'Megatheriinae belongs to Megatheriidae'
- 'Megatherium belongs to Megatheriinae'
- 'Megatherium americanum belongs to Megatherium'
- 'Morenelaphus belongs to Odocoileinae'
- 'Mylodontinae belongs to Mylodontidae'
- 'Neosclerocalyptus belongs to Hoplophorini'
- 'Panochthini belongs to Hoplophorinae'
- 'Panochthus belongs to Panochthini'
- 'Propraopus belongs to Dasypodini'
- 'Propraopus grandis belongs to Propraopus' according to Ameghino 1881
- 'Propraopus grandis belongs to Propraopus'
- 'Scelidotheriinae belongs to Mylodontidae'
- 'Scelidotherium belongs to Scelidotheriinae'
- 'Scelidotherium leptocephalum belongs to Scelidotherium'
- 'Smilodon belongs to Machairodontinae'
- 'Smilodon populator belongs to Smilodon'
- 'Stegomastodon belongs to Anancinae'
- 'Toxodon belongs to Toxodontidae'
- 'Toxodon gezi belongs to Toxodon' according to Ameghino 1917
- 'Toxodon gezi belongs to Toxodon'
- 'Toxodon platensis belongs to Toxodon' according to R. Owen 1837
- 'Toxodon platensis belongs to Toxodon'