Glyptodon:  The now extinct Doedicurus lived during the Pleistocene epoch and was a member of the family Glyptodontidae. Unlike its modern cousin, the armadillo, Doedicurus was a giant creature more than a dozen feet long!

Name: Doedicurus
Length: 13 feet
Weight: up to 2 tons
Time: 1.8 million to 11,000 years ago (Pleistocene epoch)
Place: South America
Diet: plant-eater (herbivore)