Xenungulata ("strange ungulates") is an order of extinct and primitive South American hoofed mammals that lived from the Late Paleocene to Early Eocene...

ranked as orders—Astrapotheria, Litopterna, Notoungulata, Pyrotheria, and Xenungulata—as well as the primitive "condylarth" groups Didolodontidae and Kollpaniinae...

group to the South American native ungulate group Xenungulata. A close relationship with Xenungulata was first proposed in 1985, with the proposed clade...

deposits of Brazil, Peru and Argentina. Some experts place the clade Xenungulata (which contains several genera, including Carodnia) within Pyrotheria...

Meridiungulata (along with Notoungulata, Litopterna, Pyrotheria and Xenungulata). In turn, Meridungulata is believed to belong to the extant superorder...

Eocene of Brazil, Argentina, and Peru. Carodnia is placed in the order Xenungulata together with Etayoa and Notoetayoa. Carodnia is the largest mammal known...

This is an incomplete list of prehistoric mammals. It does not include extant mammals or recently extinct mammals. For extinct primate species, see: list...

Order: †Litopterna Ameghino, 1889 Order: †Notoungulata Roth, 1903 Order: †Xenungulata? Order: †Pyrotheria? Order: †Astrapotheria? Clade: Perissodactylamorpha...

Xenungulata, Pyrotheria, Astrapotheria, and other minor groups...

†Eoastrapostylopidae Family †Trigonostylopidae Family †Astrapotheriidae Order †Xenungulata Family †Carodniidae Order †Pyrotheria Family †Pyrotheriidae Mirorder...