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As ancestors go, it might not look particularly distinguished, but this toothy rat-like creature is the forefather of us all. Remains of the little nocturnal mammal, which lived 145 million years ago, were recently discovered on the Jurassic Coast of Dorset, by paleontologists from the University of Portsmouth. 考古发现，上图这种长相和老鼠类似的啮齿动物是人类的祖先，虽然这位祖先的外貌不是很出众。近日，朴茨茅斯大学的古生物学者们在多赛特郡的侏罗纪海岸发现了这种生活在1.45亿年前的小型夜行哺乳动物的残骸。 The animal is the earliest in a line that would eventually lead to humans, as well as branching off along the way to evolve into creatures as diverse as Blue Whales and Pigmy Shrews. 这种远古动物最终会进化为人类，而且在演变过程中，还会进化成蓝鲸和鼩鼱等多种不同生物。 | 
