Class [Mammalia] Linnaeus, 1758 - mammals
Count: -
   Order Xenarthra Cope, 1889 - xenarthrans see Magnorder Xenarthra Cope, 1889
  Count: [f†f] 5f; ‡1f; †7f;1g
     Suborder Pilosa Flower, 1883 - sloths see Order Pilosa Flower, 1883
    Count: [f†f] 4f; ‡1f; †4f;1g
       Infraorder Phyllophaga Owen, 1842 see Suborder Folivora Delsuc, Catzeflis, Stanhope & Douzery, 2001
      Count: [f†f] 2f; ‡1f; †4f;1g
         Parvorder Megatheria McKenna & Bell, 1997 see Infraorder Megatheria McKenna & Bell, 1997
        Count: [f†f] 1f; ‡1f; †1f
           1.1 Family †Megatheriidae Gray, 1821
          Count: -
           1.2 Family ‡Nothrotheriidae Ameghino, 1920 see Tribe Nothrotheriini Ameghino, 1920
          Count: -
           2 Family Megalonychidae Gervais, 1855 - West Indian sloths and two-toed tree sloths
          Count: -