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67 million-year-old fossil reveals the origin of freshwater fish hearing
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67 million-year-old fossil reveals the origin of freshwater fish hearing
A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is a story about how freshwater fish rose to dominance, and how a few bones in the head may have helped them do it. In a paper, University of California, Berkeley paleontologist Juan Liu and colleagues describe a newly named fossil, Acronichthys maccagnoi. The fish lived about 67 million years ago. It measured only about 2 i…
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