Xenungulata
The Xenungulata are a group of extinct mammals that lived in the upper Paleocene in South America. Fossil remains have been found in Brazil and Argentina.
General
Xenungulata among the largest mammals of the Paleocene and were externally may tapirähnliche animals. The body was stocky, the limbs rather short and thin. The legs ended in five broad, hoofed toes. They had large, chisel-like incisors and broad molars. There have been described and Carodnia Etayoa only two genera.
System
The Xenungulata are closely related to the Pyrotheria, a spread in the Eocene and Oligocene group of similar animals elephants, and possibly even put their ancestors dar.
Usually they are considered primitive representatives of the South American ungulates ( Meridiungulata ), a widely ramified, now extinct group of mammals from South America. However, other researchers put them in a close relationship to the Dinocerata, a mammalian order whose most famous member is Uintatherium.