Research on Spriggina floundersi fossils found the wormlike creatures favored their right sides, a behavioral preference in modern animals that are right-handed.
If you happen to be right-handed, you may be able to trace the origins of that trait to a wormlike animal that lived about 550 million years ago and had a tendency to bend to the right.
Spriggina floundersi appeared in oceans during the Ediacaran Per... [6097 chars]