Earliests Animal Footprints Ever Found -- Discovered in Nevada
Sunday, October 5, 2008 - 08:28
in Paleontology & Archaeology
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.