Paleontologists working in Patagonia have unearthed the oldest-known fossil of a tadpole—and it was a whopper, measuring in at more than six inches long, the size of an adult human hand. The specimen, ...
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Once tadpoles lose lungs, they never get them back
Tadpole species that lost their lungs through evolution never re-evolve them, even when environmental change would make it advantageous—bucking long-standing assumptions about how lost traits can ...
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