Paleocene

the Paleocene period was the first Period Of After the dinosaurs but birds rule.

Gastornis

This was one of the top predators of its day. It fed on small creatures.

ambulocetus

This may have looked like a crocodile but was the ancestor of the great whales.

propalaeotherium

This was the ancstor of the horses.

leptictidium

This creature looked like a kangaroo with a trunk.