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A huge mouth and no anus – this could be our earliest known ancestor
Thought to have lived 540 million years ago, the discovery of Saccorhytus coronarious fossils sheds light on the early stages of evolution
You won’t find it in your family album, but a tiny prehistoric creature with a bag-like body, a huge mouth and no anus has become the best candidate yet for our earliest known ancestor.
https://www.theguardian.com/science/...ious-evolution
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