Pleistocene Era



The Pleistocene Era was an era during the Earth's prehistoric age.

It was sometime during this period that the last Ice Age occurred. Many early mammals lived during this period on Earth, such as the megatherium, glyptodon, mastodon and mammoth.

Superman once visited this era via time travel when his brain was altered to think he was a caveman.

External Link

 * Pleistocene Era at Wikipedia