Paschatherium is a small extinct mammal

Mammal

Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...

 of the condylarth order, with an insectivore-like dentition.
Its morhpology indicates an arboreal form, adapted climbing and running on trees. Paschatherium must have been extremely numerous in the latest Paleocene and earliest Eocene of Europe since it makes up the majority of all mammal fossils in some fossil sites.

Paschatherium is a possible ancestor of our modern elephants, sea cows and hydraxes..