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Evolution of a smile: 400 million year old spiny fish overturns shark theory of tooth origins

By Benedict King, Postdoctoral research associate, Max Planck Institute for Evolutionary Anthropology
Martin Rücklin, Senior researcher in palaeobiology, Naturalis Biodiversity Center
Philip C J Donoghue, Professor of Palaeobiology, University of Bristol
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Scientists have long believed that sharks were the first vertebrates to evolve teeth. Our new study reveals a more complex history.

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