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Misidentified fossil reclassified, reshaping views of ancient sea life

For more than 25 years, a small, soft-bodied fossil pulled from an Illinois coal mine held a remarkable title: the world’s ...

300-million-year-old sea creature mistaken for the world’s oldest octopus

For years, this fossil seemed to tell a thrilling story. Here was an animal from more than 300 million years ago that ...