The Mammal Orders
Subclass Prototheria - The Monotremes
Order Monotremata (2 families of mammals that lay eggs with leathery shells and nourish the young with milk from belly pores:
Family Ornithorhynchidae - duck-billed platypus
Family Tachyglossidae - spiny anteaters)
Subclass Metatheria (marsupials, about 270 species of mammals whose young are in an immature state, most females have pouches)
Order Didelphimorphia - opossums
Order Paucituberculata - shrew-like insectivores
Order Microbiotheria - only one living species, called "monito del monte" (Dromiciops australis)
Order Dasyuromorphia - numbat, tasmanian devil
Order Peramelemorphia - bandicoots and bilbies
Order Notoryctemorphia - marsupial moles
Order Diprotodontia - (10 families and 117 species) kangaroos, wallaby, wombats, koalas
Subclass Eutheria - Placental mammals
Order Artiodactyla (even-toed ungulates: antelope, deer, camels, pigs, cows, sheep, hippos, etc.)
Order Carnivora (carnivores: cats, bears [like the panda, polar bear, grizzly, etc.], weasels, pinnipeds, etc.)
Order Cetacea (whales, dolphins)
Order Chiroptera (bats)
Order Erinaceomorpha (hedgehogs)
Order Soricomorpha (shrews and moles)
Order Lagomorpha (rabbits, hares, pikas)
Order Macroscelidea (elephant shrews)
Order Perissodactyla (odd-toed ungulates: horses, rhinos, tapirs)
Order Pholidota (the pangolin)
Order Primates (apes, monkeys, lemurs)
Order Proboscidea (elephants, mammoths, mastodonts, etc.)
Order Rodentia (rodents: rats, mice, squirrels, gerbils, hamsters, etc.)
Order Sirenia (sea cows, manatees)
Order Tubulidentata (aardvarks)
Order Edentata [also called Xenarthra] (sloths, armadillos)
Order Hyracoidea (hyraxes)
Subclass: Prototheria - protos (Gr) first; ther (Gr) a wild animal
Order: Monotremata - monas (Gr) single; trema (Gr) hole
The Marsupials - SUBCLASS: Metatheria (Marsupialia) - meta (Gr) among, between; of place, after...ther (Gr) a wild animal
Order: Didelphimorphia (63 species) opossums
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