Earth’s first mammals took it easy and lived far longer than their modern counterparts
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Morganucodon (left) and Kuehneotherium (right) hunting in Early Jurassic Wales 200 million years ago – By Amy Woodyatt, CNN Updated 11:05 AM ET, Mon 2020 Oct 12 – Earth’s earliest mammals spent their lives at a more leisurely pace than their modern counterparts, …