This combination of 2011 and 2003 file photos shows Barney the Dinosaur, left, in Chicago and a Tyrannosaurus Rex model outside the Museum of Science in Boston. Did T. rex stand upright

 

              This combination of 2011 and 2003 file photos shows Barney the Dinosaur, left, in Chicago and a Tyrannosaurus Rex model outside the Museum of Science in Boston. Did T. rex stand upright
This combination of 2011 and 2003 file photos shows Barney the Dinosaur, left, in Chicago and a Tyrannosaurus Rex model outside the Museum of Science in Boston. Did T. rex stand upright, with its tail on the ground? No. But a lot of young people seem to think so, a study suggests. The authors concluded they soaked up the wrong idea from toys, games and other pop culture items. (AP Photo/Nam Y. Huh, Bizuayehu Tesfaye)