The oldest ancestor of modern octopuses lived 328 million years ago and had 10 arms, according to a new study. Researchers have named the previously unknown species Syllipsimopodi bideni after US President Joe Biden
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The creature's discovery pushes back the time frame when vampyropods, the group to which cephalopods like octopuses belong, appeared in the ocean by almost 82 million years.The study published Tuesday in the journal Nature Communications.
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