Reed Gallery of the Age of Mammals | Level 2

The rise of mammals following the great extinction of dinosaurs.

After the extinction of the dinosaurs about 65 million years ago, other animals continued to develop and flourish. This was a time when Earth's continents continued to separate into their present-day positions and predecessors of modern mammals emerged on the scene, sharing the Earth with our own ancient ancestors. Our mastodon, sabre-toothed cat and giant ground sloth, to name just a few, welcome you to a gallery that traces the development of mammals and other life from 65 million years ago to the present day.

About the Gallery


More than 400 specimens represent both North and South American life and biodiversity, including 30 fossil skeletons of extinct mammals.


Specimens from around the world are included, with a significant number representing Canada, and specifically, the Great Lakes region.


From the Cenozoic Era (approx. 65 million years ago) to the present day.