Zaglossus hacketti is an extinct species of the long-beaked echidna from Western Australia that is dated from the Pleistocene. It is known only from a few bones found in Western Australia. It was the size of a sheep, weighing probably up to 100 kg lb).
Phorusrhacids, colloquially known as terror birds, were a clade of large carnivorous flightless birds that were the largest species of apex predators in South America during the Cenozoic, million years (Ma) ago.
Moeritherium ('the beast from Lake Moeris') is a genus consisting of several extinct species. These prehistoric mammals are related to the elephant and, more distantly, the sea cow. They lived during the Eocene epoch.
The Pyrotheria are a group of extinct mammals that lived during the Eocene and Oligocene in South America and had some similarities with the elephants. But they were not related to this, but are counted to the South American ungulates