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近期《Nature Communications》上发表的一项研究指出,存在于化石中的畸形浮游生物正好和物种大灭绝的时间重合,这些化石数据可能可以证明物种大灭绝另有其他原因导致。虽然,冰川期以前曾被与最古老的重大物种灭绝事件联系起来,但是欧洲科学家的这项研究认为,造成物种大灭绝的原因,更有可能是海洋中缺氧现象和有害金属的存在。有些理论认为,奥陶纪-志留纪的物种大灭绝事件,可能是在距今4.2亿年前以因为小行星撞击地球导致的。当时绝大多数生命都在海洋中,
A recent study published in Nature Communications pointed out that the abnormal plankton living in fossils coincided with the period of mass extinction, and these fossil data may prove that the species was extinct due to other reasons. Although the Ice Age had previously been linked to the extinction of the oldest major species, the European scientist’s study concluded that the causes of species extinctions are more likely to be the absence of oxygen in the oceans and the presence of noxious metals. Some theories suggest that the mass extinction of the Ordovician-Silurian might have been caused by an asteroid impact on Earth 420 million years ago. At that time most of the lives are in the ocean,