Ancient fossil may hold clues to right
Researchers studying 550-million-year-old fossils of the wormlike Spriggina have discovered evidence of directional preference. The findings suggest that the evolutionary roots of 'handedness' date back to the earliest animal life.
Why it matters
This study provides a deeper understanding of the evolutionary origins of behavioral traits that are common in modern animals, including humans.
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.
The article is a scientific report based on peer-reviewed findings.
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