Paleoecology vs taphonomy: Unraveling the molecular fossil record of the Mesoproterozoic Lakhanda Lagerstätte (SE Siberia, Russia)

古生态学与埋藏学：揭开中元古代 Lakhanda Lagerstätte（俄罗斯西伯利亚东南部）的分子化石记录

• 批准号: 388478912
• 负责人: Professor Dr. Volker Thiel, since 9/2020
• 金额: --
• 依托单位: Paleontological Institute
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/388478912?language=en
• 关键词: Paleoecology; vs; taphonomy; Unraveling; molecular

The terminal Mesoproterozoic Lakhanda Lagerstätte (1025-1010 Ma; SE Siberia, Russia) provides a rare glimpse into early eukaryotic ecosystems. It contains abundant body fossils of eukaryotic affinity and syngeneitic molecular fossils, allowing for detailed paleoecological investigations. Despite the apparent body fossil record, molecular fossils of eukaryotes (steranes) are rare, a typical characteristic of the mesoproterozoic record. As yet it is not clear whether this reflects a paleoecological signal or is due to a taphonomic bias. This project aims at investigating the paleoecology and taphonomy of the Lakhanda Lagerstätte by conducting detailed analyses of molecular fossil assemblages (bitumen and kerogen). Together with sedimentological and paleontological evidence, the obtained data will provide important background information on the geological record of early eukaryotes, and shed new light on their ecosystems.

中元古界末期的Lakhanda Lagerstätte（1025-1010 Ma;俄罗斯西伯利亚东南部）提供了对早期真核生态系统的罕见一瞥。它含有丰富的真核生物体化石和同生分子化石，可以进行详细的古生态研究。尽管有明显的身体化石记录，真核生物（甾烷）的分子化石是罕见的，这是中元古代记录的典型特征。到目前为止，尚不清楚这是否反映了古生态信号或由于埋藏偏见。该项目旨在通过对分子化石组合（沥青和干酪根）进行详细分析，调查Lakhanda Lagerstätte的古生态学和埋藏学。结合沉积学和古生物学证据，所获得的数据将为早期真核生物的地质记录提供重要的背景信息，并为它们的生态系统提供新的线索。

项目成果

Early Eukaryotes in the Lakhanda Biota (Mesoproterozoic, Southeastern Siberia)—Morphological and Geochemical Evidence

• DOI: 10.1134/s0012496621050100
• 发表时间: 2021-09
• 期刊: Doklady Biological Sciences
• 作者: J. Shuvalova;K. Nagovitsin;J. Duda;P. Parkhaev