Next to the footprints, scientists have also discovered Nora
In the South of China have found the oldest traces left bilateral (bilaterally symmetrical) animals about 550 million years ago.
Scientists have discovered probably the oldest traces of animals known at the moment. First found in the mouth of the Yangtze river animal prints with a pair of limbs confirm that ancient bilateral (multicellular animals with bilateral symmetry) animals actually existed before the Cambrian explosion.
The traces left by about 550 million years ago, in the width reaches just a few millimeters and consist of two parallel rows. The researchers suggest that the creature could be several pairs of legs, like a spider or gubonogih.
Found the oldest traces of animal on Earth
Next to the footprints, scientists have also discovered holes that may belong to the same animal (as it is supposed, the animal could find food). But researchers note that to determine exactly who owns these tracks, it is impossible: we only know that this animal was bilateral symmetry in the paired extremities.
Cambrian explosion – the sudden (in the geological sense) appearance in rondocubism (about 540 million years ago) sediments of the fossil representatives of many divisions of the animal Kingdom, in the absence of their fossils or fossils of their ancestors in the Precambrian sediments.