β All time stops
The Age of Mammals
60 million years ago β furry animals take over
Put on your time-travel shoes and zoom back to a world where tiny furry creatures became the new kings of the planet!
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- 66 million years ago
A Big Fresh Start
A massive space rock hit Earth and the giant dinosaurs disappeared. Tiny warm creatures hiding underground survived the dark days.
The big idea
When the giant dinosaurs disappeared, mammals grew big and filled the empty world.
Fun facts
- β¨ The very first horses were so small they could fit right inside your backpack!
- β¨ Ancient whales had back legs and walked on land before they moved to the ocean full-time.
- β¨ Your pet dog, a blue whale, and you are all part of the mammal family!
Science words
- Mammal β An animal with hair or fur that feeds warm milk to its babies.
- Extinct β When a whole kind of animal is completely gone from the world.
- Fossil β An ancient bone, shell, or footprint turned into stone over a very long time.