Director of the National Museum of Natural History Kirk Johnson (L) and Lt. General Thomas Bostick of the U.S. Army Corps of Engineers (R) unveil the right femur of a sixty-six million old ... more 
Director of the National Museum of Natural History Kirk Johnson (L) and Lt. General Thomas Bostick of the U.S. Army Corps of Engineers (R) unveil the right femur of a sixty-six million old Tyrannosaurus Rex skeleton at the Smithsonian Museum of Natural History in Washington April 15, 2014. The T. Rex will be the centerpiece of a new National Fossil Hall in the museum which is expected to open in 2019. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY SCIENCE MILITARY) less 
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Reuters | Photo By GARY CAMERON / Reuters
Tue, Apr 15, 2014 11:18 AM EDT