Infraclass ORNITHODELPHIA
Order MONOTREMATA (3, 3)
Tachyglossidae (2,2) Echidnas
Ornithorhynchidae (1, 1) Duck-billed platypus
Infraclass METATHERIA (82, 251)
Order DIDELPHIMORPHIA
Didelphidae (15, 63) New World Opossums
PAUCITUBERCULATA
Caenolestidae (3, 5) Shrew or rat opossums
MICROBIOTHERIA
Microbiotheriidae (1, 1) Monito del monte
DASYUROMORPHIA
Dasyuridae (15, 61) Marsupial mice; Tasmanian devil
Myrmecobiidae (1, 1) Numbat
Thylacinidae (1,1) Tasmanian wolf
NOTORYCTEMORPHIA
Notoryctidae (1, 2) Marsupial moles
SYNDACTYLA
Order PERAMELEMORPHIA
Peramelidae (3, 8) Bandicoots and bilbies
Peroryctidae (4, 11) New Guinea bandicoots
DIPROTODONTIA (38, 117)
Phascolarctidae (1, 1) Koala
Vombatidae (2, 3) Wombats
Phalangeridae (6, 18) Cuscuses, brushtail possums
Potoroidae (5, 9) Potoroos, bettongs
Macropodidae (11, 54) Kangaroos, wallabies, walaroos, pademelons
Burramyidae (2, 5) Pygmy possums
Pseudocheiridae (5, 14) Ringtailed possums
Petauridae (3, 15) Striped possums, wrist-ringed gliders
Tarsipedidae (1, 1) Honey possum
Acrobatidae (2, 2) Feathertail glider, possum
Infraclass EUTHERIA (1055, 4450)
Order XENARTHRA
Bradypodidae (1, 3) Three-toed sloths
Megalonychidae (1, 2) Two-toed sloths
Choloepinae
Dasypodidae (8, 20) Armadillos
Myrmecophagidae (3, 4) True anteaters
PHOLIDOTA
Manidae (1, 7) Pangolins
INSECTIVORA (66, 428)
Solenodontidae (1, 2) Solenodons
Nesophontidae (1, 8) Nesophontids
Tenrecidae (10, 24) Tenrecs
Chrysochloridae (7, 18) Golden moles
Erinaceidae (7, 21) Hedgehogs, gymnures
Soricidae (23, 312) Shrews
Talpidae (17, 42) Moles and desmans
ARCHONTA
Order SCANDENTIA
Tupaiidae (5, 19) Tree shrews
DERMOPTERA
Cynocephalidae (1, 2) Colugos
CHIROPTERA (177, 925)
Macrochiroptera
Pteropodidae (42, 166) Old World fruit bats
Microchiroptera
Rhinopomatidae (1, 3) Mouse-tailed bats
Craseonycteridae (1, 1) Kitti's hog-nosed bat
Emballonuridae (13, 47) Sac-winged or sheath-tailed bats
Nycteridae (1, 12) Slit-faced bats
Megadermatidae (4, 5) False vampire bats
Rhinolophidae (10, 130) Horseshoe bats
Noctilionidae (1, 2) Fishing bats
Mormoopidae (2, 8) Leaf-chinned bats
Phyllostomidae (49, 141) New World leaf-nosed bats Natalidae (1, 5) Funnel-eared bats
Furipteridae (2, 2) Smoky bats
Thyropteridae (1, 2) Disk-winged bats
Myzopodidae (1, 1) Sucker-footed bat
Vespertilionidae (35, 318) Common bats
Mystacinidae (1, 2) Short-tailed bats
Molossidae (12, 80) Free-tailed bats
PRIMATES (60, 223)
Strepsirhini
Cheirogaleidae (4, 7) Dwarf and mouse lemurs
Lemuridae (4, 10) Lemurs
Megaladapidae (1, 7) Sportive lemurs
Indridae (3, 5) Indrid lemurs, sifakas
Daubentoniidae (1, 1) Aye-aye
Loridae (4, 6) Lorises, potto
Galagonidae (4, 11) Bushbabies, galagos
Haplorhini
Tarsiidae (1, 5) Tarsiers
Callitrichidae (4, 26) Marmosets, tamarins
Cebidae (11, 58) New World monkeys
Cercopithecidae (18, 81) Old World monkeys
Hylobatidae (1, 11) Gibbons, siamang
Hominidae (4, 5) Gorilla, chimpanzees, orangutan, humans
Order CARNIVORA (129, 271)
Caniformia
Canidae (13, 33) Wolves, coyote, foxes, jackals
Procyonidae (6, 18) Raccoon, kinkajou, red panda
Mustelidae (25, 65) Weasels, skunks, otters
Ursidae (6, 19) Bears, panda
Odobenidae (1, 1) Walrus
Otariidae (7, 14) Sea lions
Phocidae (10, 19) Seals
Feliformia
Felidae (18, 36) Lion, bobcat, cheetah, puma
Herpestidae (18, 37) Mongooses
Hyaenidae (4, 4) Hyenas, aardwolf
Viverridae (20, 34) Civets, genets
UNGULATA
Order ARTIODACTYLA (81, 220)
Suiformes
Suidae (5, 16) Pigs, warthogs
Tayassuidae (3, 3) Peccaries
Hippopotamidae (2, 2) Hippopotamuses
Tylopoda
Camelidae (3, 6) Camels, llamas, vicuna
Ruminantia
Tragulidae (3, 4) Chevrotains
Giraffidae (2, 2) Giraffe, okapi
Moschidae (1, 4) Musk deer
Cervidae (16, 42) Deer, elk, moose
Antilocapridae (1, 1) Pronghorn antelope
Bovidae (45, 137) Antelope, sheep, goats, buffalo, bison, cattle
CETACEA
Mysticeti
Balaenidae (2, 3) Bowhead and right whales
Balaenopteridae (2, 6) Rorquals
Eschrichtiidae (1, 1) Gray whale
Neobalaenidae (1, 1) Pigmy right whale
Odontoceti
Delphinidae (17, 32) Dolphins
Monodontidae (2, 2) Narwhal, beluga
Phocoenidae (4, 6) Porpoises
Physeteridae (2, 3) Sperm whales
Platanistidae (4, 5) River dolphins
Ziphiidae (6, 19) Beaked whales
TUBULIDENTATA
Orycteropodidae (1, 1) Aardvark
PERISSODACTYLA
Equidae (1, 9) Horses, asses, zebras
Tapiridae (1, 4) Tapirs
Rhinocerotidae (4, 5) Rhinoceroses
HYRACOIDEA
Procaviidae (3, 11) Hyraxes
SIRENIA
Dugongidae (1, 1) Dugong, †Stellar seacow
Trichechidae (1, 3) Manatees
PROBOSCIDEA
Elephantidae (2, 2) Elephants
GLIRES
Order RODENTIA (443, 2015)
Sciurognathi
Aplodontidae (1, 1) Mountain beaver
Sciuridae (50, 273) Squirrels, marmots
Castoridae (1, 2) Beavers
Geomyidae (5, 35) Pocket gophers
Hetromyidae (6, 59) Pocket mice, kangaroo rats
Dipodidae (15, 51) Jerboas, birch mice, jumping mice
Muridae (281, 1326) Rats and mice
Anomaluridae (3, 7) scaly-tailed squirrels
Pedetidae (1, 1) Springhaas
Ctenodactylidae (4, 5) Gundis
Myoxidae (8, 26) Doormice
Hystricognathi
Bathyergidae (5, 12) Mole rats
Hystricidae (3, 11) Old World porcupines
Petromuridae (1, 1) Dassie rat
Thryonomyidae (1, 2) Cane rats
Erethizontidae (4, 12) New World Porcupines
Chinchillidae (3, 6) Chinchillas, viscachias
Dinomyidae (1, 1) Paracana
Caviidae (5, 14) Cavies, guinea pigs, Patagonian hare
Hydrochaeridae (1, 1) Capybara
Dasyproctidae (2, 13) Agoutis, acouchis
Agoutidae (1, 2) Pacas
Ctenomyidae (1, 38) Tuco-tucos
Octodontidae (6, 9) Viscacha rats, coruro
Abrocomidae (1, 3) Chinchilla rats
Echimyidae (16, 71) Spiny rats
Capromyidae (4, 12) Hutias
Myocastoridae (1, 1) Nutria
LAGOMORPHA
Ochotonidae (2, 26) Pikas
Leporidae (11, 54) Rabbits, hares
MACROSCELIDEA
Macroscelididae (4, 15) Elephant shrews
A MOLECULAR VIEW OF EUTHERIAN CLASSIFICATION
Infraclass Eutheria
Group I: Atlantogenata
Order Xenarthra: sloths and anteaters (Neotropica) and armadillos (Neotropica and Nearctica).
Superorder Afrotheria
Order Afrosoricida
Family Tenrecidae: tenrecs (Madagascar) and otter-shrews (West and Central Africa).
Family Chrysochloridae: golden moles (Africa south of the Sahara).
Order Macroscelidea: elephant shrews (Africa).
Order Tubulidentata: aardvark (Africa south of the Sahara).
Order Hyracoidea: hyraxes, dassies (Africa, Arabia).
Order Proboscidea: elephants (Africa, Southeast Asia).
Order Sirenia
Family Dugongidae: dugong (East Africa, Red Sea, North Australia).
Family Trichechidae: manatees (tropical Atlantic coasts and adjacent rivers).
Group II Euarchontoglires
Superorder Euarchonta
Order Scandentia: tree shrews (Southeast Asia).
Order Primates: lemurs, bushbabies, monkeys, apes (cosmopolitan).
Order Dermoptera: flying lemurs or colugos (Southeast Asia).
Superorder Glires
Order Lagomorpha: pikas, rabbits, hares (Eurasia, Africa, Americas).
Order Rodentia: rodents (cosmopolitan)
Group III: Laurasiatheria
Superorder Laurasiatheria
Order Insectivora (Lipotyphla)
Family Solenodontidae: solenodons (Cuba, Hispaniola).
Family Erinaceidae: hedgehogs, moonrats (Eurasia, Africa).
Family Soricidae: shrews (Eurasia, Africa, North America to northern South America).
Family Talpidae: moles, shrew-moles, desmans (Eurasia, North America).
Order Chiroptera: bats (cosmopolitan)
Order Pholidota: pangolins, scaly anteaters (Africa, South Asia).
Order Carnivora: carnivorans (cosmopolitan)
Order Perissodactyla: odd-toed ungulates
Family Equidae: horses, zebras, donkeys (Africa, West and Central Asia).
Family Tapiridae: tapirs (Central and South America, Southeast Asia).
Family Rhinocerotidae: rhinoceroses (Africa, Southeast Asia).
Order Cetartiodactyla
including the previous orders Cetacea (whales, dolphins and porpoises) and Artiodactyla (even-toed ungulates, including pigs, hippopotamus, camels, giraffe, deer, antelope, cattle, sheep, goats).
The Atlantogenata is an ancient southern hemisphere radiation that includes the South American Xenarthra and the mainly African Afrotheria. Atlantogenata reflects the hypothesis that the opening of the Atlantic Ocean, which caused
the break up of Gondwana, isolated one branch of this lineage in South America and another in Africa during the Cretaceous. The Laurasiatheria is named because of its largely northern hemisphere origin and distribution. The Order Cetartiodactyla is based on molecular evidence that hippopotamuses are more closely related to whales than they are to other artiodactyls.