In this illustration by Marianne Collins/Royal Ontario Museum shows a Capinatator praetermissus. Long before dinosaurs roamed the Earth, the bizarre creature swam the seas. Photo: Royal Ontario Museum via AP

Scientists find tiny prehistoric sea worm dating back to Cambrian age over 500 million years ago

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In this illustration by Marianne Collins/Royal Ontario Museum shows a Capinatator praetermissus. Long before dinosaurs roamed the Earth, the bizarre creature swam the seas. Photo: Royal Ontario Museum via AP
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