- Infraclass Metatheria (marsupials and their nearest ancestors)
- Infraclass Eutheria
- Order Afrosoricida
- Order Macroscelidea
- Order Tubulidentata
- Order Proboscidea
- Order Sirenia
- Order Hyracoidea
- Order Pilosa
- Order Cingulata
- Order Dermoptera
- Order Scandentia
- Family Tupaiidae (tree shrews)
- Family Ptilocercidae (pen-tailed treeshrew
- Order Primates
- Family Cheirogaleidae (dwarf lemurs, mouse lemurs)
- Family Lemuridae (lemurs)
- Family Lepilemuridae (sportive lemurs)
- Family Indriidae (wooly lemurs, sifakas)
- Family Daubentoniidae (aye-aye)
- Family Lorisidae (lorises)
- Family Galagonidae (bushbabies, galagos)
- Family Tarsiidae (tarsiers)
- Family Cebidae (marmosets, tamarins, capuchins, squirrel monkeys)
- Family Aotidae (night monkeys)
- Family Pitheciidae (titis, uacaris, sakis)
- Family Atelidae (howlers, spider monkeys, wooly monkeys)
- Family Cercopithecidae (Old World monkeys)
- Family Hylobatidae (gibbons)
- Family Hominidae (apes, human)
- Order Rodentia
- Family Aplodontiidae (sewellel or mountain beaver)
- Family Sciuridae (squirrels)
- Family Gliridae (dormice)
- Family Castoridae (beavers)
- Family Heteromyidae (kangaroo rats, pocket mice)
- Family Geomyidae (pocket gophers)
- Family Dipodidae (jerboas, birch mice, jumping mice)
- Family Platacanthomyidae (tree mice)
- Family Spalacidae (zokors, bamboo rats, mole rats)
- Family Calomyscidae (calomyscuses)
- Family Nesomyidae (pouched rats and mice, climbing and fat mice, etc.)
- Family Cricetidae (voles, hamsters, New World rats and mice
- Family Muridae (rats, mice)
- Family Anomaluridae (scaily-tailed flying squirrels)
- Family Pedetidae (springhaas, springhares)
- Family Ctenodactylidae (gundis)
- Family Diatomyidae (kha-nyous or Laotian rock rat)
- Family Bathyergidae (mole-rats)
- Family Hystricidae (African and Asian porcupines)
- Family Petromuridae (dassie rat)
- Family Thryonomyidae (can rats)
- Family Erethizontidae (bristle-spined rat and New World porcupines)
- Family Chinchillidae (chinchillas, vizcachas)
- Family Dinomyidae (pacarana)
- Family Caviidae (cuis, guinea-pigs, cavies, maras, capybaras)
- Family Dasyproctidae (agoutis, acouchis)
- Family Cuniculidae (pacas)
- Family Ctenomyidae (tuco-tucos)
- Family Octodontidae (degus, rock rats, vizcacha-rats)
- Family Abrocomidae (chinchilla rats)
- Family Echimyidae (spiny rats, tree rats, hutias, & coypu)
- Family †Heptaxodontidae (giant hutias and key mice)
- Order Lagomorpha
- Order Eulipotyphla
- Order Chiroptera
- Order Pholidota
- Order Carnivora
- Family Felidae (cats)
- Family Viverridae (civets, genets)
- Family Eupleridae (falanouc, fossa, Madagascaran mongooses)
- Family Nandiniidae (African palm civet)
- Family Herpestidae (mongooses)
- Family Hyaenidae (hyaenas, aardwolf)
- Family Canidae (wolves, foxes, jackals)
- Family Ursidae (bears, giant panda)
- Family Odobenidae (walrus)
- Family Otariidae (eared seals, fur seals, sea lions)
- Family Phocidae (earless seals)
- Family Mustelidae (weasels, badgers, otters)
- Family Procyonidae (raccoons, ringtails, coatis)
- Family Ailuridae (red panda)
- Order Perissodactyla
- Order Artiodactyla
- Family Suidae (hogs, pigs)
- Family Tayassuidae (peccaries)
- Family Hippopotamidae (hippopotamuses)
- Family Camelidae (camels, vicunas, guanacos, llamas)
- Family Tragulidae (chevrotains and mouse deer)
- Family Moschidae (musk deer)
- Family Cervidae (deer)
- Family Antilocapridae (pronghorn)
- Family Giraffidae (giraffe and okapi)
- Family Bovidae (antelope, bison, cattle, duikers, goats, sheep, etc.)
- Order Cetacea