Ancylopoda

Ancylopoda is a group of browsing, herbivorous, mammals in the Perissodactyla that show long, curved and cleft claws. Morphological evidence indicates the Ancylopoda diverged from the tapirs, rhinoceroses and horses (Euperissodactyla) after the Brontotheria; however, earlier authorities such as Osborn sometimes considered the Ancylopoda to be outside Perissodactyla or, as was popular more recently, to be related to Brontotheriidae.

Lophiodontidae is a family of browsing, herbivorous, mammals in the Perissodactyla suborder Ancylopoda. They lived in Southern Europe during the Eocene epoch. Previously thought to be related to tapirs, it is now thought that they were most likely related to early chalicotheres, although they are distinct from that group.

Chalicotherioidea (from Ancient Greek χάλιξ (khálix), meaning "gravel", and θηρίον (theríon), meaning "beast") is 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. Many of the contained genera had derived specializations of the forelimb and manus that allowed the claws to be