An undated artist rendering of a Lythronax argestes is seen in this handout image from the Natural History Museum of Utah in Salt Lake City, Utah. Scientists in Utah say they have discovered ... more 
An undated artist rendering of a Lythronax argestes is seen in this handout image from the Natural History Museum of Utah in Salt Lake City, Utah. Scientists in Utah say they have discovered Tyrannosaurus rex's "great-uncle," a massive predator with a thick skull and large teeth dubbed the "king of gore." REUTERS/Lukas Panzarin/Natural History Museum of Utah/Handout via Reuters (UNITED STATES - Tags: SCIENCE TECHNOLOGY ANIMALS) ATTENTION EDITORS - NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS less 
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Reuters | Photo By HANDOUT / REUTERS
Thu, Nov 7, 2013 9:49 AM EST