生物大灭绝

有关这些方面的研究成果无疑为认识二叠纪末生物大灭绝后的海洋条件提供了重要的事实依据。

These provide important evidences for marine environment after the end-Permian mass extinction .

论述二叠纪末生物大灭绝事件后的一次全球性快速海侵。

A global rapid transgression after the end-Permian mass extinction is herein discussed .

二叠纪-三叠纪之交生物大灭绝与复苏是当前国际古生物学研究的热点问题之一。

And the mass extinction and biotic recovery during the Permian-Triassic transition has become one of the hotspots in the paleontological research .

一直以来，导致包括恐龙在内的地球生物大范围灭绝的“火山论”，由于缺少直接证据，长期备受争议。

All the time , because it is lack of direct evidence , the volcanic eruption theory on the mass extinction of the world including dinosaurs is in a lot of disputes .

这是专供逼近的生物武器和大灭绝之用。

It was reserved for imminent threat from biological weapons of mass destruction .