Today’s mammals are the product of 200 million years of evolution, but scientists aren’t sure exactly how features of modern mammals came to be. A twin pair of studies published in the journal tackles ...
June 21 (Reuters) - More than 250 million years ago, Scotland was not veiled in mist and rain, as it often is today, but rather a desert blanketed in sand dunes. One of the denizens of this ...
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