Permo-Triassic tetrapods and their climate implications
Permo-Triassic tetrapods and their climate implications
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DOI：
10.1016/j.gloplacha.2021.103618
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发表时间：
2021-10
影响因子：
3.9
通讯作者：
Jun Liu;K. Angielczyk;F. Abdala
中科院分区：
文献类型：
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作者：
Jun Liu;K. Angielczyk;F. Abdala
地热四足动物活动温度范围较窄，可作为恢复古气候的指标。在此，我们根据已知的地理分布、现存四足动物的临界热限和其他来源的古气候信息，推断出主要的二叠纪-三叠纪四足类的气候偏好。由此得到的羊膜动物的首选温度序列将大多数三叠纪始祖龙置于光谱的高端，在某些情况下，首选温度超过32℃，其次是卷尾龙、恐龙、原舌龙、犬齿动物、二齿龙(不包括Lystrosaurus)、费古斯原龙，最后是Lystrosaurus。二叠纪Lystrosaurus的极地分布标志着冷温带气候的边界，而TriassicLystrosaurus则划定了干旱地带的边界。大多数温度脊椎动物表示常年水源的可用性。卷尾龙和恐龙喜欢干燥的气候，而双齿龙则喜欢潮湿的环境。根据目前的证据，在奥伦基期晚期，盘古大陆中部从干旱地带过渡到热带。
The narrow active temperature ranges of ectothermic tetrapods can be used as proxies for reconstructing paleoclimates. Here we deduce the climatic preferences of major Permo-Triassic tetrapod groups based on their known geographic distributions, the critical thermal limits of living tetrapods, and paleoclimate information from other sources. The resulting preferred temperature sequence of amniotes places most Triassic archosauromorphs at the high end of the spectrum, with preferred temperatures over 32 °C in some cases, followed by captorhinids, pareiasaurs, procolophonids, cynognathian cynodonts, dicynodonts (excludingLystrosaurus),Proterosuchus fergusi,and finallyLystrosaurusat the lowest preferred temperature. The poleward distribution of PermianLystrosaurusmarks the border of cool temperate climates, whereas TriassicLystrosaurusdelineates the border of the arid zone. Most temnospondyls indicate the availability of perennial water sources. Captorhinids and pareiasaurs preferred dry climates, whereas dicynodonts preferred wetter conditions. Based on current evidence, central Pangea transitioned from an arid zone to a tropical zone during the late Olenekian.