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| Caviomorpha | Octodontoidea | Octodontidae †Platypittamys |
| Caviomorpha | Octodontoidea | Octodontidae Tympanoctomys spp. |
| Caviomorpha | Octodontoidea | Octodontidae Aconaemys spp. |
| Caviomorpha | Octodontoidea | Octodontidae Spalacopus cyanus coruro |
| Caviomorpha | Octodontoidea | Octodontidae Octodon spp. |
| Caviomorpha | Octodontoidea | Octodontidae Octodontomys gliroides mountain degu |
| Caviomorpha | Octodontoidea | Octodontidae Octomys mimax mountain viscacha rat |
| Caviomorpha | Octodontoidea | Octodontidae Pipanacoctomys aureus golden viscacha rat |
| Caviomorpha | Octodontoidea | Heptaxodontidae | Heptaxodontinae †Amblyrhiza |
| Caviomorpha | Octodontoidea | Heptaxodontidae | Heptaxodontinae †Elasmodontomys |
| Caviomorpha | Octodontoidea | Heptaxodontidae | Heptaxodontinae †Quemisia |
| Caviomorpha | Octodontoidea | Heptaxodontidae | Heptaxodontinae †Xaymaca |
| Caviomorpha | Octodontoidea | Heptaxodontidae | Clidomyinae †Clidomys |
| Caviomorpha | Octodontoidea | Ctenomyidae Ctenomys |
| Caviomorpha | Octodontoidea | Echimyidae †Cercomys |
| Caviomorpha | Octodontoidea | Echimyidae †Maruchito |
| Caviomorpha | Octodontoidea | Echimyidae †Paulacoutomys |
| Caviomorpha | Octodontoidea | Echimyidae †Proclinodontomys |
| Caviomorpha | Octodontoidea | Echimyidae †Willidewu |
| Caviomorpha | Octodontoidea | Echimyidae | Adelphomyinae †Adelphomys |
| Caviomorpha | Octodontoidea | Echimyidae | Adelphomyinae †Deseadomys |
| Caviomorpha | Octodontoidea | Echimyidae | Adelphomyinae †Paradelphomys |
| Caviomorpha | Octodontoidea | Echimyidae | Adelphomyinae †Stichomys |
| Caviomorpha | Octodontoidea | Echimyidae | Adelphomyinae †Xylechimys |
| Caviomorpha | Octodontoidea | Echimyidae | Heteropsomyinae †Boromys |
| Caviomorpha | Octodontoidea | Echimyidae | Heteropsomyinae †Brotomys |
| Caviomorpha | Octodontoidea | Echimyidae | Heteropsomyinae †Heteropsomys |
| Caviomorpha | Octodontoidea | Echimyidae | Heteropsomyinae †Puertoricomys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Acarechimys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Chasichimys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Eumysops |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Palaeoechimys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Pampamys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Pattersomys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Protacaremys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Protadelphomys |
| Caviomorpha | Octodontoidea | Echimyidae | Eumysopsinae †Sallamys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Lonchothrix |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Mesomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Pattonomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Toromys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Makalata |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Echimys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Phyllomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Diplomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini Santamartamys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini | Dactylomyines Kannabateomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini | Dactylomyines Dactylomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Echimyini | Dactylomyines Olallamys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Myocastorini Callistomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Myocastorini Myocastor |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Myocastorini Thrichomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Myocastorini Hoplomys |
| Caviomorpha | Octodontoidea | Echimyidae | Echimyinae | Myocastorini Proechimys |
| Caviomorpha | Octodontoidea | Echimyidae | Eucyzygomatomyinae Trinomys |
| Caviomorpha | Octodontoidea | Echimyidae | Eucyzygomatomyinae Euryzygomatomys |
| Caviomorpha | Octodontoidea | Echimyidae | Eucyzygomatomyinae Clyomys |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae †Hexolobodon |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae †Hyperplagiodontia |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae †Isolobodon |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae †Rhizoplagiodontia |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae | Platiodontini Plagiodontia |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae | Capromyini Geocapromys |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae | Capromyini Capromys |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae | Capromyini Mesocapromys |
| Caviomorpha | Octodontoidea | Echimyidae | Capromyinae | Capromyini Mysateles |
| Caviomorpha | Cavioidea | Cephalomyidae †Banderomys |
| Caviomorpha | Cavioidea | Cephalomyidae †Cephalomyopsis |
| Caviomorpha | Cavioidea | Cephalomyidae †Cephalomys |
| Caviomorpha | Cavioidea | Cephalomyidae †Litodontomys |
| Caviomorpha | Cavioidea | Cephalomyidae †Soriamys |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Chubutomys |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Phanomys |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Schistomys |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Eocardia |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Matiamys |
| Caviomorpha | Cavioidea | Eocardiidae | Eocardiinae †Neophanomys |
| Caviomorpha | Cavioidea | Eocardiidae | Luantinae †Asteromys |
| Caviomorpha | Cavioidea | Eocardiidae | Luantinae †Luantus |
| Caviomorpha | Cavioidea | Neoephiblemidae †Doryperimys |
| Caviomorpha | Cavioidea | Neoephiblemidae †Perimys |
| Caviomorpha | Cavioidea | Neoephiblemidae †Neoepiblema |
| Caviomorpha | Cavioidea | Neoephiblemidae †Phoberomys |
| Caviomorpha | Cavioidea | Dasyproctidae †Incamys |
| Caviomorpha | Cavioidea | Dasyproctidae †Alloiomys |
| Caviomorpha | Cavioidea | Dasyproctidae †Australoprocta |
| Caviomorpha | Cavioidea | Dasyproctidae †Branisamys |
| Caviomorpha | Cavioidea | Dasyproctidae †Neoreomys |
| Caviomorpha | Cavioidea | Dasyproctidae †Megastus |
| Caviomorpha | Cavioidea | Dasyproctidae †Palmiramys |
| Caviomorpha | Cavioidea | Dasyproctidae Dasyprocta spp. agoutis |
| Caviomorpha | Cavioidea | Dasyproctidae Myoprocta spp. acouchis |
| Caviomorpha | Cavioidea | Caviidae | Caviinae Cavia |
| Caviomorpha | Cavioidea | Caviidae | Caviinae Galea |
| Caviomorpha | Cavioidea | Caviidae | Caviinae Microcavia |
| Caviomorpha | Cavioidea | Caviidae | Dolichotinae Dolichotis |
| Caviomorpha | Cavioidea | Caviidae | Dolichotinae Pediolagus |
| Caviomorpha | Cavioidea | Caviidae | Hydrochoerinae Hydrochoerus |
| Caviomorpha | Cavioidea | Caviidae | Hydrochoerinae Kerodon |
| Caviomorpha | Cavioidea | Cuniculidae Cuniculus paca lowland paca, spotted paca |
| Caviomorpha | Cavioidea | Cuniculidae Cuniculus taczanowskii mountain paca |
| Caviomorpha | Chinchilloidea | Dinomyidae †Branisamys |
| Caviomorpha | Chinchilloidea | Dinomyidae †Agnomys |
| Caviomorpha | Chinchilloidea | Dinomyidae †Borikenomys |
| Caviomorpha | Chinchilloidea | Dinomyidae †Pseudodiodomus |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Briaromys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Colpostemma |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Doellomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Eumegamysops |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Eumegamys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Gyriabrus |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Josephoartigasia |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Orthomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Pentastylodon |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Pseudosigmomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Telicomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Eumegamyinae †Tetrastylus |
| Caviomorpha | Chinchilloidea | Dinomyidae | Potamarchinae †Eusigmomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Potamarchinae †Olenopsis |
| Caviomorpha | Chinchilloidea | Dinomyidae | Potamarchinae †Potamarchus |
| Caviomorpha | Chinchilloidea | Dinomyidae | Potamarchinae †Scleromys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Potamarchinae †Simplimus |
| Caviomorpha | Chinchilloidea | Dinomyidae | Dinomyinae †Telodontomys |
| Caviomorpha | Chinchilloidea | Dinomyidae | Dinomyinae Dinomys branickii pacarana |
| Caviomorpha | Chinchilloidea | Chinchillidae †Eoviscaccia |
| Caviomorpha | Chinchilloidea | Chinchillidae | Lagostominae †Pliolagostomus |
| Caviomorpha | Chinchilloidea | Chinchillidae | Lagostominae †Prolagostomus |
| Caviomorpha | Chinchilloidea | Chinchillidae | Lagostominae Lagostomus spp. plains viscachas |
| Caviomorpha | Chinchilloidea | Chinchillidae | Chinchillinae Chinchilla spp. chinchillas |
| Caviomorpha | Chinchilloidea | Chinchillidae | Chinchillinae Lagidium spp. mountain viscachas |
| Caviomorpha | Chinchilloidea | Abrocomidae †Protabrocoma |
| Caviomorpha | Chinchilloidea | Abrocomidae Abrocoma |
| Caviomorpha | Chinchilloidea | Abrocomidae Cuscomys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Branisamyopsis |
| Caviomorpha | Erethizontoidea | Erethizontidae †Cholamys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Eopululo |
| Caviomorpha | Erethizontoidea | Erethizontidae †Hypsosteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Microsteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Neosteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Palaeosteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Paradoxomys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Parasteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae †Protosteiromys |
| Caviomorpha | Erethizontoidea | Erethizontidae Chaetomys |
| Caviomorpha | Erethizontoidea | Erethizontidae Coendou |
| Caviomorpha | Erethizontoidea | Erethizontidae Erethizon |