Articles relating to the Chalicotherioidea, an extinct superfamily of clawed perissodactyls (odd-toed ungulates) that lived from the early Eocene to the early Pleistocene subepochs. Based on the fossil record, they emerged and thrived largely in Eurasia, although specimens have been found in both Africa and North America. They were likely browsers that fed mainly on leaves, twigs, and other nonresistant vegetation.

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