'Monstrously Big Ant' Fossil Found in Wyoming

05/04/2011 11:06 am ET | Updated Nov 15, 2011
  • LiveScience.com

Almost 50 million years ago, ants the size of hummingbirds roamed what is now Wyoming, a new fossil discovery reveals.

These giant bugs may have crossed an Arctic land bridge between Europe and North America during a particularly warm period in Earth's history.

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