Germán Chávez is no stranger to the Amazon rain forest, where he says "one can't help but get excited" by all the reptiles and amphibians that he has made a career out of studying. But when he came ...
DNA testing of two new-to-science frog species has shown they share a common ancestor — a species that lived 55 million years ago in the mountains of what is today Brazil’s Amazonas state. The ...
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