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Temporal range: Middle Eocene
|Leptictidium auderiense as it appeared in Walking with Beasts|
| †Leptictidium auderiense|
The Leptictidium is at least a meter long and lived in the Eocene rainforests in Eurasia. They lived from 50 to 35 million years ago (when the first cats appeared and the world cooled down).They were omnivorous mammals. They ate insects, lizards and small mammals. Together with macropods and humans, Leptictidium is the only known biped mammal. It's name means graceful weasel. Leptictidium lived in a scientific family called Pseudorrhyncocyonidae.