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Study: Fish Were Walking 400 Million Years Ago — Long Before Land-Dwelling Vertebrates



An international team of scientists has uncovered information about the nerve networks required for walking on land, suggesting the last common ancestor of sharks and mammals walked underwater about 400 million years ago (Devonian period). The study appears in the journal Cell. Past research had revealed that the little skate (Leucoraja erinacea), a cartilaginous fish […]



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