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中美古生物学家合作开展的关于真兽类哺乳动物起源研究的最新成果显示,产自中国辽宁建昌县玲珑塔地区距今1.6亿年的髫髻山组的哺乳动物化石中华侏罗兽(新
The latest achievements of the research on the origin of mammals of true mammals by Chinese and American paleontologists show that the mammalian fossil Chinese jurassic (new)