The history of animal evolution on Earth is even longer than previously proved.
In the latest issue of the journal Geology, it is reported that over 70 fossil trails of multi-celled animals dated to 565million years ago have been found in ancient rocks in Newfoundland, Canada.
The lead researcher, Alex Liu from Oxford University, said this indicates that these organisms had a definite degree of muscular control used for locomotion. This is the oldest evidence of creatures with muscular control that allows them to move and look for food or avoid adverse local conditions. It is suggested they may have moved about the sea bottom as sea anemones do.