论文部分内容阅读
对普林斯巴期末的绝灭事件(187 Ma)有两种成因解释:一种认为它是过去250 Ma以来10个全球周期性的集群绝灭事件之一,二是认为它是一个小的局限于欧洲的事件。从晚普林斯巴期至早托阿尔期,该事件造成的较高的科级绝灭持续了5个菊石带约7.5 Ma的时间间隔,并不同程度地影响了北方、特提斯和南方生物大区。对西北欧完整的地层剖面进行详细的无脊椎动物大化石采样研究表明,大多数种的绝灭发生在早托阿尔期,紧跟在区域性缺氧事件之后。早侏罗世集群绝灭事件发生在一个长的时间间隔中,因而是一个全球范围的事件。
There are two explanations for the causes of extinction at the end of Prinspa (187 Ma): one is that it is one of the 10 global cyclical extinctions of the past 250 Ma and the second is that it is a small Limited to events in Europe. From late Princespark to Early Pleistocene, the higher Section-level extinction caused by this event lasted for about 7.5 Ma intervals with five ammonites, and to varying degrees affected the northern, Tethys and Southern biological area. A detailed detailed study of large invertebrates fossil sampling of intact stratigraphic profiles in Western and Northern Europe shows that the extinction of most species occurred in the early prophylaxis of Althria, immediately following a regional hypoxia event. The extinction of the Early Jurassic cluster occurred over a long time interval and was therefore a worldwide event.