Class Mammalia Linnaeus, 1758 - mammals
   Order Xenarthra Cope, 1889 - xenarthrans see Magnorder Xenarthra Cope, 1889
     1 Family Bradypodidae Batsch, 1788 - three-toed tree sloths
     2 Family Megalonychidae Gervais, 1855 - West Indian sloths and two-toed tree sloths
     3 Family Dasypodidae Gray, 1821 - armadillos
     4 Family Myrmecophagidae Gray, 1825 - anteaters