Class Mammalia Linnaeus, 1758 - mammals
   01 Order Monotremata Bonaparte, 1837 - monotremes
   02 Order Didelphimorphia Gill, 1872
   03 Order Paucituberculata Ameghino, 1894
   04 Order Microbiotheria Ameghino, 1889
   05 Order Dasyuromorphia Gill, 1872
   06 Order Peramelemorphia Ameghino, 1889
   07 Order Notoryctemorphia Kirsch, 1977
   08 Order Diprotodontia Owen, 1866
   09 Order Xenarthra Cope, 1889 - xenarthrans see Magnorder Xenarthra Cope, 1889
   10 Order Insectivora Bowdich, 1821 - insectivores see Superorder Insectivora Bowdich, 1821
   11 Order Scandentia Wagner, 1855 - tree shrews
   12 Order Dermoptera Dobson, 1883
   13 Order Chiroptera Blumenbach, 1779 - bats
   14 Order Primates Linnaeus, 1758 - primates
   15 Order Carnivora Bowdich, 1821 - carnivores
   16 Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises see Infraorder Cetacea Brisson, 1762
   17 Order Sirenia Gill, 1872 - sea cows
   18 Order Proboscidea Owen, 1859 - elephants
   19 Order Perissodactyla Owen, 1848 - odd-toed ungulates
   20 Order Hyracoidea Huxley, 1869 - hyraxes
   21 Order Tubulidentata Huxley, 1872 - aardvark
   22 Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
   23 Order Pholidota Weber, 1904 - pangolins
   24 Order Rodentia Bowdich, 1821 - rodents
   25 Order Lagomorpha Brandt, 1855 - lagomorphs
   26 Order Macroscelidea Butler, 1956 - elephant shrews