在中国,代晚期四足动物的古生物学环境
Xuelian Guo1, Gregory J Retallack2, Jinhao Liu1
1Key Laboratory of Western China's Mineral Resources of Gansu Province, School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
Scientific reports
|November 22, 2023
概括
德纪晚期的四足动物,如Sinostega,居住在富有生产力的林地溪流中,而不仅仅是水. 这项研究使用古生物学家重建古代环境,揭示了早期四足动物进化的关键息地.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 古气候学 古气候学
背景情况:
- 从鱼类向两动物的过渡涉及早期四足动物,它们适应了水生和陆生生物的适应.
- 了解这些过渡物种的息地对于识别驱使陆地殖民的选择性压力至关重要.
- 以前的假设提出了潮平面,沙漠池或林地溪流作为潜在的息地.
研究的目的:
- 用古分析重建了德纪晚期四足动物Sinostega的古老环境.
- 确定Sinostega的特定息地,并将其与其他德纪四足动物进行比较.
- 为了解鱼类到两动物过渡期间的选择性压力作出贡献.
主要方法:
- 分析与中宁形成相关的中国石家庄峡谷的古岩.
- 在形成中的四足动物,鱼类,软体动物和植物化石的识别.
- 根据古太阳的特征重建古气候和植被.
主要成果:
- 在一个曲的溪流的古河道中发现了Sinostega化石.
- 相关的古岩表明,在季风低湿的古气候下,这是一个排水良好的原生苗木林地息地.
- 这种息地与美国宾夕法尼亚州发现的其他晚代纪四足动物的息地相似.
结论:
- 德纪晚期的四足动物,包括Sinostega,居住在富含木质碎片的生产性林地溪流中.
- 这些林地溪流息地可能为捕食者提供了避难所,并支持陆地适应的进化.
- 古石分析是推断古代气候和植被的宝贵工具,有助于重建四足动物息地.
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