Mysterious fossils turned out to be some of the earliest known animals. Organic molecules preserved with Dickinsonia fossils, dating back to at least 541 million years ago, clinched that the creatures were animals, not fungi or lichen

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Mysterious fossils turned out to be some of the earliest known animals. Organic molecules preserved with Dickinsonia fossils, dating back to at least 541 million years ago, clinched that the creatures were animals, not fungi or lichen