

Klasifikasi 
Suborder Folivora (sloth)
 Family Bradypodidae (three-toed sloths)
 Bradypus
 Pale-throated sloth (Bradypus tridactylus))
 Brown-throated sloth (Bradypus variegatus)
 Maned sloth (Bradypus torquatus)
 Pygmy three-toed sloth (Bradypus pygmaeus)
 Family Megalonychidae (two-toed sloths and extinct ground sloths)
 Choloepus (Two-toed sloths)
 Hoffmann's two-toed sloth (Choloepus hoffmanni)
 Linnaeus's two-toed sloth (Choloepus didactylus)
 Acratocnus
 Habanocnus
 Neocnus
 Imagocnus
 Megalocnus
 Megalonyx
 Family Megatheriidae (megatheriid ground sloths)
 Eremotherium
 Hapalops
 Megatherium
 Nothrotherium
 Nothropus
 Family Mylodontidae (mylodontid ground sloths)
 Glossotherium
 Lestodon
 Mylodon
 Paramylodon
 Scelidotherium
 Chubutherium
 Family Nothrotheriidae (nothrotheriid ground sloths)
 Nothrotheriops
 Pronothrotherium
 Thalassocnus
 Family Orophodontidae (orophodontid ground sloths)

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