ScienceDaily -- Dinosaurs survived two mass extinctions and 50 million years before taking over the world and dominating ecosystems, according to new research published this week.
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See also:
America's Smallest Dinosaur Uncovered
Tuesday, September 30, 2008Mass Extinctions And The Evolution Of Dinosaurs
ScienceDaily -- Dinosaurs survived two mass extinctions and 50 million years before taking over the world and dominating ecosystems, according to new research published this week.
More... See also: America's Smallest Dinosaur Uncovered 
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