Taxonomy
Mylodon's close relatives include the giant ground sloths of the genera Glossotherium and Paramylodon. The latter genus has often been confused with Glossotherium but Paramylodon is a distinct genus that was restricted to the Pleistocene of North America. Glossotherium also shares a long history of taxonomic confusion with Mylodon, and currently the only recognized species is Mylodon darwinii. At one time, the elephant-sized Megatherium was thought to be closely related, but is recognized as belonging to a separate family (Megatheriidae).
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