The orders into placental
mammals are are the following:

, mammals with an
number of fingers claws or paws ,
e.g., cows, sheep, . Carnivorous,
predators with teeth like dogs,
, tigers. Cetaceans, aquatic
without posterior limbs similar to
fishes, whales and dolphins.
, creatures with rare absent
teeth, like , armadillos, anteaters.
Lagomorphs, -sized mammals
having three of continuously
growing teeth specialized in
, like rabbits and .
Perissodactyls, also known ungulates
(hooved), big-sized with an odd
of fingers in paw, e.g.,
horses rhinos. Primates,
characterized the big cranium
well-developed brain, like and
apes. Proboscideans, -sized animals
whose nose superior lip form
trunk (snout), e.g., .
Chiropterans, flying nocturnal
(bats). Rodents, animals two pairs
of growing incisive teeth,
.g., mice, rats, castors, .
Sirenians, aquatic mammals
freshwater, deprived of limbs,
like dugongs manatees.