Imagine you're driving your typical stone-age car back in the Pleistocene period about 2 million years ago. You know- the one Fred Flintstone drove with foot-power acceleration. You come around a bend late at night and you see something in the road ahead of you. Before you can react, you hit the poor animal but you take the worst of it. The crash knocks your car off the road!
  You've just met Holmesina septentrionalis, the Giant Armadillo, which reached lengths of over 6 feet.
 Giant armadillos migrated up to North America  from South America along with other animals such as llamas, tapirs and sloths when ocean levels dropped allowing them to cross a land bridge which now existed in the area near Panama.
  Giant armadillos are superficially similar to today's armadillos but differ in some subtle ways. They were herbivorous instead of omnivorous and the arrangement of the shell sections were different. Their teeth were also different, not just larger, which is the best clue to their diet.
  The Giant Armadillo lived in the southern part of North America from approximately 1.5 million years ago up until their extinction about 10,000 years ago along with most other large mammals. 
  As fossils, we most commonly find shell sections (scutes) or isolated teeth or jaw sections.