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集数：5集
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简介：恐龙统治了地球长达一亿六千万年之久，突然间消失灭绝了，这成为生物史上难解之谜。灾难来临，地球上一半以上的生物都灭绝了。科学家认为历史上有五次大灭绝，恐龙所处的年代是最严重的一次。行星坠落地球时，光芒四射，在着陆地点爆炸相当于数十亿颗原子弹爆炸，而且形成冲击波，森林被摧毁，地球上的生物从此发生了改变。收起
恐龙灭绝之谜（一）
恐龙灭绝之谜（二）
恐龙灭绝之谜（三）
恐龙灭绝之谜（四）
恐龙灭绝之谜（五）
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