Fossils reveal the earliest animal with a head was also the oldest known ‘righty’

Fossils reveal the earliest animal with a head was also the oldest known ‘righty’

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 Period (635 million to 542 million years ago) at the...

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