page_title: Mammal classification
section_title: Subclass Theria
hierarchical_section_title: Mammal classification / Standardized textbook classification / Subclass Theria
caption_attribution_description: Cynopterus brachyotis English: Tabdulla 12:52, 15 October 2006 (UTC)
context_page_description: Mammalia is a class of animal within the phylum Chordata. Mammal classification has been through several iterations since Carl Linnaeus initially defined the class. No classification system is universally accepted; McKenna & Bell and Wilson & Reader provide useful recent compendiums. Many earlier ideas from Linnaeus et al. have been completely abandoned by modern taxonomists, among these are the idea that bats are related to birds or that humans represent a group outside of other living things. Competing ideas about the relationships of mammal orders do persist and are currently in development. Most significantly in recent years, cladistic thinking has led to an effort to ensure that all taxonomic designations represent monophyletic groups. The field has also seen a recent surge in interest and modification due to the results of molecular phylogenetics.
  George Gaylord Simpson's classic "Principles of Classification and a Classification of Mammals" taxonomy text laid out a systematics of mammal origins and relationships that was universally taught until the end of the 20th century.
context_section_description: Infraclass Metatheria (marsupials and their nearest ancestors)
  Order Didelphimorphia
  Family Didelphidae (opossums, etc.)
  Order Paucituberculata
  Family Caenolestidae (shrew opossums)
  Order Microbiotheria
  Family Microbiotheriidae (monitos del monte)
  Order Dasyuromorphia (most carnivorous marsupials)
  Family Thylacinidae (Tasmanian tigers)
  Family Myrmecobiidae (numbats)
  Family Dasyuridae (Tasmanian devils, quolls, dunnarts, planigale, etc.)
  Order Peramelemorphia (bandicoots, bilbies, etc.)
  Family Peramelidae (bandicoots, echymiperas)
  Family †Chaeropodidae (pig-footed bandicoot)
  Order Notoryctemorphia (marsupial moles)
  Family Notoryctidae
  Order Diprotodontia
  Family Phascolarctidae (koalas)
  Family Vombatidae (wombats)
  Family Phalangeridae (brushtail possums and cuscuses)
  Family Potoroidae (bettongs, potoroos and rat kangaroos)
  Family Macropodidae (kangaroos, wallabies, etc.)
  Family Burramyidae (pygmy possums)
  Family Pseudocheiridae (ringtailed possums, etc.)
  Family Petauridae (striped possum, Leadbeater's possum, yellow-bellied glider, sugar glider, mahogany glider and squirrel glider)
  Family Tarsipedidae (honey possum)
  Family Acrobatidae (feathertail glider and feather-tailed possum)
  Family Hypsiprymnodontidae (musky rat kangaroo)
  Infraclass Eutheria
  Order Afrosoricida
  Family Tenrecidae (tenrecs)
  Family Chrysochloridae (golden moles)
  Order Macroscelidea
  Family Macroscelididae (elephant-shrews
  Order Tubulidentata
  Family Orycteropodidae (aardvark)
  Order Proboscidea
  Family Elephantidae (elephants)
  Order Sirenia
  Family Dugongidae (dugongs, sea cows)
  Family Trichechidae (manatees)
  Order Hyracoidea
  Family Procaviidae (hyraxes)
  Order Pilosa
  Family Bradypodidae (three-toed tree sloths)
  Family Megalonychidae (two-toed tree sloths)
  Family Myrmecophagidae (tamanduas and giant anteater)
  Family Cyclopedidae (silky anteater)
  Order Cingulata
  Family Dasypodidae (armadillos)
  Order Dermoptera
  Family Cynocephalidae (colugos)
  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 Galagidae (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 (poched 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, etc)
  Family Myocastoridae (coypu or nutria)
  Family Capromyidae (hutias)
  Family †Heptaxodontidae (giant hutias and key mice(
  Order Lagomorpha
  Fa
caption: Cynopterus brachyotis
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