气候变化领域集成服务门户(CCPortal): High-resolution taphonomic and palaeoecological analyses of the Jurassic Yanliao Biota of the Daohugou area; northeastern China

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DOI	10.1016/j.palaeo.2019.05.028
	High-resolution taphonomic and palaeoecological analyses of the Jurassic Yanliao Biota of the Daohugou area; northeastern China
	Wang S.; Hethke M.; Wang B.; Tian Q.; Yang Z.; Jiang B.
发表日期	2019
ISSN	0031-0182
起始页码	200
结束页码	216
卷号	530
英文摘要	The Yanliao Biota contains numerous exceptionally preserved fossils of evolutionary importance. However, the palaeoenvironment of this biota has not been fully studied. Here we present the first taphonomic and palaeoecological analysis of fossil abundance data from two newly excavated sites in the Daohugou area. In our study we have investigated the taxonomic composition, specimen abundance and size distribution patterns of invertebrate palaeocommunities, and corresponding taphonomic features, such as completeness, articulation and fossil orientation. Our results show that abundant aquatic and terrestrial organisms from various ecological niches are preserved in very thinly planar-laminated mudstone. Aquatic organisms of the two excavations are represented by low-diversity but high-density assemblages containing four species: the clam shrimp Triglypta haifanggouensis, the mayfly nymphs Fuyous gregarious and Shantous lacustris, and the water boatman Daohugocorixa vulcanica. Triglypta haifanggouensis dominates the fauna with carapace lengths ranging from 1.34 mm to 5.62 mm. Size distributions of different bedding planes vary between normal, bimodal and polymodal, implying multiple causes of death: reproductive senescence, and mass mortality events related to active volcanism or to rapid environmental fluctuations within the lake. Generally calm depositional conditions were repeatedly interrupted by weak currents, indicated by preferred plan-view orientations of aquatic insects on four out of nine investigated bedding planes. Changes in the community composition of aquatic arthropods relate to varying lake depth through time, or to different dispersal strategies after community breakdown. Terrestrial insects are highly diverse but less abundant. As a result of rapid burial, 49.8% of which are almost complete and articulated. The flora surrounding the comparatively shallow lake was rich, picturing a thriving forest-like ecosystem with moisture relation in a warm-temperate climate. © 2019 Elsevier B.V.
英文关键词	Biostratinomy; Mass mortality; Palaeoenvironment; Quantitative analysis; Volcanism
语种	英语
scopus关键词	abundance; biostratigraphy; community composition; dispersal; fossil assemblage; Jurassic; mass mortality; mayfly; paleoecology; qualitative analysis; size distribution; taphonomy; volcanism; China; Daohugou; Nei Monggol; Arthropoda; Conchostraca; Corixidae; Ephemeroptera; Hexapoda; Invertebrata
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150894
作者单位	Center for Research and Education on Biological Evolution and Environments, School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; Institut für Geologische Wissenschaften, Fachbereich Geowissenschaften, Freie Universität Berlin, Malteserstrasse 74-100, Berlin, D-12249, Germany; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing, 210008, China
推荐引用方式 GB/T 7714	Wang S.,Hethke M.,Wang B.,et al. High-resolution taphonomic and palaeoecological analyses of the Jurassic Yanliao Biota of the Daohugou area; northeastern China[J],2019,530.
APA	Wang S.,Hethke M.,Wang B.,Tian Q.,Yang Z.,&Jiang B..(2019).High-resolution taphonomic and palaeoecological analyses of the Jurassic Yanliao Biota of the Daohugou area; northeastern China.Palaeogeography, Palaeoclimatology, Palaeoecology,530.
MLA	Wang S.,et al."High-resolution taphonomic and palaeoecological analyses of the Jurassic Yanliao Biota of the Daohugou area; northeastern China".Palaeogeography, Palaeoclimatology, Palaeoecology 530(2019).