Marsupialia
- Macropodidae
Kangaroos; wallabies.
- Phalangeridae
Phalangers; koalas.
- Dasyuridae
Dasyures; native cats; pouched mice; banded anteaters; Tasmanian devils.
- Didelphidae
Opossums.
- Peramelidae
Bandicoots.
- Caenolestidae
Small marsupials of southern South America.
- Vombatidae
Wombats.
- Notoryctidae
Pouched moles.
Microchiroptera
- Vespertilionidae
The majority of common bats of temperate regions of the world.
- Phyllostomidae
New World leaf-nosed bats.
- Desmodontidae
True vampire bats.
- Hipposideridae
Old World leafnose bats.
- Molossidae
Mastiff bats; freetail bats.
- Rhinolophidae
Old World leaf-nosed bats.
- Megadermatidae
Old World false vampire bats.
Insectivora
- Talpidae
Moles.
- Soricidae
Shrews.
- Tenrecidae
Tenrecs and extinct related forms.
- Chrysochloridae
Golden moles.
- Erinaceidae
True hedgehogs.
- Potamogalidae
Otter shrews.
Carnivora
- Viverridae
Genets; civets; mongooses.
- Canidae
Dogs; wolves; jackals; foxes.
- Felidae
Cats; wildcats; lions; leopards; cheetahs; saber-toothed tigers.
- Ursidae
Bears and extinct related forms.
- Hyaenidae
Hyenas.
Odontoceti
- Delphinidae
Dolphins.
- Physeteridae
Sperm whales.
- Ziphiidae
Beaked whales; in some especially former classifications included in the family Physe...
- Platanistidae
River dolphins.
Mysticeti
- Balaenopteridae
Rorquals; blue whales.
- Balaenidae
Right whales.
- Eschrichtiidae
Comprising only the grey whales.
Pinnipedia
- Otariidae
Eared seals: sea lions and fur seals.
- Phocidae
Earless seals.
- Odobenidae
Walruses and extinct forms.
Lagomorpha
- Leporidae
Hares and rabbits.
- Ochotonidae
Pikas and extinct forms.
Myomorpha
- Cricetidae
Mostly small New World rodents including New World mice and lemmings and voles and h...
- Muroidea
A superfamily of rodents essentially equal to the suborder Myomorpha but with the Dipodidae...
Muridae
- Muridae
Originally Old World rats now distributed worldwide; distinguished from the Cricetidae by...
- Hydromyinae
Water rats of Australia and New Guinea.
Monotremata
- Tachyglossidae
Echidnas.
- Ornithorhynchidae
Platypus.
Sirenia
- Dugongidae
A family of mammals of order Sirenia including dugongs and Steller's sea cow.
- Trichechidae
Comprising only the manatees.
Also contains
- Potoroinae
Rat kangaroos.
- Gerbillinae
Gerbils.
- Monodontidae
Narwhals.
- Orycteropodidae
Aardvarks.