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Xenarthra

The order Xenarthra or Edentata is a group of placental mammals, extant today only in the Americas.

It includes the following families:

Myrmecophagidae (anteater)
Megalonychidae (two toed sloth)
Bradypodidae (three toed sloth)
Dasypodidae (armadillo)

The order was originally called Edentata, meaning toothless, because the members do not have front incisor teeth or molars, or have poorly-developed molars. It is now called Xenarthra, meaning strange joints, because their vertebral joints are unlike those of all other mammals.

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