Tetrapod distribution and temperature rise during the Permian-Triassic mass extinction.
Tetrapod distribution and temperature rise during the Permian-Triassic mass extinction.
复制标题
二叠纪三叠纪质量灭绝期间的四脚架分布和温度升高。
DOI：
10.1098/rspb.2017.2331
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发表时间：
2018-01-10
期刊：
影响因子：
--
通讯作者：
Benton MJ
中科院分区：
文献类型：
--
作者：
Bernardi M;Petti FM;Benton MJ
二叠纪-三叠纪大灭绝（PTME）对生命产生了三方面的巨大影响：大幅度减少多样性，重新调整生态系统的组成，以及在强烈的全球变暖之后将生命从热带地区驱逐出去。但是，真的有一个“赤道四足动物间隙”吗？它持续了多久？在这里，我们考虑了骨骼和足迹数据，并发现了一个更复杂的模式：（i）在这段时间里，四足动物分布在高纬度和低纬度;（ii）通过PTME有一个明显的地理分离，四足动物分布向极地移动10-15°;（iii）在PTME之后，整个盘古大陆有一个快速扩张阶段。这些变化与三叠纪早期四足动物普遍迁移到高纬度、较冷地区以逃离超热赤道气候的模型相一致，但这种影响在时间尺度上较短，并不像人们提出的那样明显。在PTME之后的恢复阶段，这段被迫的范围扩张似乎也促进了全新群体的出现和辐射，例如包括恐龙在内的祖龙。
The Permian–Triassic mass extinction (PTME) had an enormous impact on life in three ways: by substantially reducing diversity, by reshuffling the composition of ecosystems and by expelling life from the tropics following episodes of intense global warming. But was there really an ‘equatorial tetrapod gap', and how long did it last? Here, we consider both skeletal and footprint data, and find a more complex pattern: (i) tetrapods were distributed both at high and low latitudes during this time; (ii) there was a clear geographic disjunction through the PTME, with tetrapod distribution shifting 10–15° poleward; and (iii) there was a rapid expansion phase across the whole of Pangea following the PTME. These changes are consistent with a model of generalized migration of tetrapods to higher latitudinal, cooler regions, to escape from the superhot equatorial climate in the earliest Triassic, but the effect was shorter in time scale, and not as pronounced as had been proposed. In the recovery phase following the PTME, this episode of forced range expansion also appears to have promoted the emergence and radiation of entirely new groups, such as the archosaurs, including the dinosaurs.
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DOI：
10.1016/j.palaeo.2012.09.005
发表时间：
2013-02-15
影响因子：
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作者：
Benton, Michael J.;Ruta, Marcello;Sakamoto, Manabu
通讯作者：
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