Rodentia


 * Anomaluromorpha
 * Anomaluridae: scaly-tailed squirrels
 * Pedetidae: springhares
 * Castorimorpha
 * Castoroidea
 * Castoridae: beavers
 * Geomyoidea
 * Geomyidae: pocket gophers (true gophers)
 * Heteromyidae: kangaroo rats, kangaroo mice
 * Hystricomorpha
 * Ctenodactylomorphi
 * Ctenodactylidae: gundis
 * Hystricognathi
 * Bathyergidae: African mole rats
 * Hystricidae: Old World porcupines
 * Petromuridae: dassie rat
 * Thryonomyidae: cane rats
 * Caviomorpha
 * †Heptaxodontidae: giant hutias
 * Abrocomidae: chinchilla rats
 * Capromyidae: hutias
 * Caviidae: cavies, including Guinea pigs and the capybara
 * Chinchillidae: chinchillas, viscachas
 * Ctenomyidae: tuco-tucos
 * Dasyproctidae: agoutis
 * Cuniculidae: pacas
 * Dinomyidae: pacaranas
 * Echimyidae: spiny rats
 * Erethizontidae: New World porcupines
 * Myocastoridae: coypu (nutria)
 * Octodontidae: octodonts
 * Incertae sedis
 * Diatomyidae: Laotian rock rat
 * Myomorpha
 * Dipodoidea
 * Dipodidae: jerboas and jumping mice
 * Muroidea
 * Calomyscidae: mouse-like hamsters
 * Cricetidae: hamsters, New World rats and mice, muskrats, voles, lemmings
 * Muridae: true mice and rats, gerbils, spiny mice, crested rat
 * Nesomyidae: climbing mice, rock mice, white-tailed rat, Malagasy rats and mice
 * Platacanthomyidae: spiny dormice
 * Spalacidae: mole rats, bamboo rats, zokors
 * Sciuromorpha
 * Aplodontiidae: mountain beaver
 * Gliridae (also Myoxidae, Muscardinidae): dormice
 * Sciuridae: squirrels, including chipmunks, prairie dogs, marmots