【哺乳類如何打敗曾經是地表最大生物的恐龍,崛起並進一步成為優勢物種?】
The passing of the age of the dinosaurs allowed mammals to become ascendant. But mammals have a much deeper history. They – or, more precisely, we – originated around the same time as the dinosaurs, over 200 million years ago; mammal roots lie even further back, some 325 million years.