Look: Primate relative shows how ancient animals adapted to climate changes

Migration is key.

Originally Published: 
One of the new species, Ignacius dawsonae, climbing up a tree. It looks a bit like a red panda. Arti...
Kristen Miller

Clemens Grün / EyeEm/EyeEm/Getty Images

52 million years ago, the Arctic was not the frozen tundra we know today.

Instead of snow and ice, it was covered with lush forests and swamplands.

Several quick periods of global warming, called hyperthermals, happened during the Eocene period and drastically changed the landscape.