'Monstrously Big Ant' Fossil Found in Wyoming
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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First Posted: 05/04/11 12:06 PM ET Updated: 11/15/11 10:31 AM ET