Lungless Frog Discovered In Borneo

A rare and primitive frog living in a remote Borneo stream has no lungs and apparently absorbs oxygen through its skin. The aquatic frog has evolved backwards, re-acquiring a primordial trait, David Bickford of the National University of Singapore and colleagues reported. Studying the frog could help shed light on how lungs evolved in the first place, they wrote in the journal Current Biology, adding that illegal gold mining in the area may threaten the unique species

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