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Aquatic Dinosaurs 30 Million Years Early Monday, October 06, 2008 - Anuradha Menon Home >> Headlines >> General Science   
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The fossilized trail of an aquatic creature suggests that animals walked using legs at least 30 million years earlier than had been thought. The tracks -- two parallel rows of small dots, each about 2 millimeters in diameter -- date back some 570 million years, to the Ediacaran period. The Ediacaran preceded the Cambrian period, the time when most major groups of animals first evolved. Scientists once thought that it was primarily microbes and simple multicellular animals that existed. (source: researchnews.osu.edu)
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