Echimyidae
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Mammalia |
| Order: | Rodentia |
| Suborder: | Histricomorpha |
| Family: | Echimyidae |
- Genus
- Carterodon
- Clyomys
- Dactylomys
- boliviensis, dactylinus, peruanus -- Coro-coro
- Diplomys
- caniceps, labilis, rufodorsalis -- ??
- Echimys
- blainvillei, braziliensis, chrysurus, dasythrix, grandis, macrurus, nigrispinus, saturnus, semivillosus, unicolor -- Arboreal Spiny Rat
- Euryzygomatomys
- Heteropsomys Boromys
- Heteropsomys Brotomys
- contractus, voratus -- ??
- Heteropsomys Heteropsomys
- antillensis, insulans -- ??
- Hoplomys
- Isothrix
- bistriata, picta, villosa -- Toro
- Kannabateomys
- amblyonyx -- Rato de Taquara
- Lonchothrix
- Makalata
- Mesomys
- didelphoides, hispidis, obscurus -- ??
- Proechimys Proechimys
- brevicauda, canicollis, cuvieri, goeldii, guairae, guyannnsis, hendeei, hoplomyoides, longicaudatus, oris, quadruplicatus, semispinosus, steeri, warrreni -- Spiny Rat
- Proechimys Trinomys
- albispinus, dimidiatus, iheringi, myosuros, setosus -- Spiny Rat
- Thrinacodus
- Trichomys