A scientist in the eastern German state of Saxony-Anhalt believes he has uncovered tracks from the world's oldest dinosaur. But the footprints at the center of the find have sparked a major debate among scientists.
A massive creature tromped its way across an expansive limestone marsh. Horseshoe crabs scurried in its wake, and a reptile similar to a crocodile crossed its path. Weighing between 600 and 800 kilograms (1,760 pounds), the creature left impressive footprints in the limestone deposit. Shifting sand then covered the tracks. The creature's rear foot measured a large 35 centimeters (14 inches).
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