多国科学家组成的科研小组将对墨西哥尤卡坦半岛著名的“奇科苏卢布”陨石坑进行声波探测，而这个巨大的陨石坑可能就是6500万年前造成恐龙灭绝的根本原因。 科学家们希望通过这一研究能找到当时彗星或小行星撞击地球的更多的有用信息。
Scientists working off the Yucatan Peninsula are preparing to use sound waves to search for information about an asteroid that may have wiped out the dinosaurs 65 million years ago.
恐龙研究专家认为，现代鸟类直接起源于手盗龙类，其他已灭绝的恐龙现在被称之为“非鸟恐龙”。
Modern birds are direct descendants of Maniraptoran dinosaurs, experts say. The creatures that went extinct millions of years ago are now called "non-avian dinosaurs."
牛津大学的研究者用表格的形式对哺乳动物在过去600亿年里的脑进化进行了描述 - 即从恐龙灭绝后的几百万年到今天的这段时间里。
The researchers at Oxford University charted the evolution of mammal brains over the last 60million years – from a few million years after the dinosaurs became extinct to the modern day.
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