Scientists have discovered the oldest footprints

Scientists found the oldest footprints left limbs of living beings. This was reported in a press release on the site, University of Ohio (Ohio State University), whose officers were involved in the study. The group of scientists reported their results at the conference of the American geological community.

Traces of the substance were left in the soft coastal soil 570 million years ago on the territory of the modern state of Nevada. They represent nearly sequence of points about two millimeters in diameter. Scientists believe that traces of an ancient non-owned, we recall today mnogonozhek. In doing so, researchers are constrained to say how long the substance was or how many limbs were those "legs".

Similar fossil footprints were discovered a few years ago in Canada and in China. Age was the first of about 520 million years old, the age of second - about 540 million years. According to the authors found traces of not only the oldest on Earth, but also prove the fact that the limbs from living organisms have appeared over 570 million years ago. Previously it was thought that until that time, the planet inhabited mostly unicellular and multicellular simple, but nothing that can "walk", but has not yet been made.

The main difficulty in the study of organisms that period is that their bodies consisted mainly of soft tissues that are not amenable to "fossilization", so how is being left traces of ancient, it is not possible.