Early Permian bryozoan faunas of the East Gondwana rift system: viewed from a global perspective

东冈瓦纳裂谷系早二叠世苔藓动物区系：全球视角

• 批准号: 235200976
• 负责人: Privatdozent Dr. Andrej Ernst, Ph.D.
• 金额: --
• 依托单位: Institut für Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/235200976?language=en
• 关键词: Early; Permian; bryozoan; faunas; East

This proposal aims to study Lower Permian bryozoan faunas from the East Gondwana rift system. Bryozoans are among the best-represented macroinvertebrates in the fossil record, because of the presence of a calcareous skeleton in the great majority of species and wide distribution in various marine biotopes. The East Gondwana rift system ran north-south with marine conditions present through a palaeolatitudinal range from 40° to ¬60°S and with open-marine conditions in the north (Timor) to more restricted marine conditions in the south (Perth Basin). Basins of the East Gondwana rift system record the history of Southern Hemisphere deglaciation episodes during the Early Permian, and contain Lower Permian shallow-marine carbonate facies dominated by bryozoan skeletons that previously have received very limited study. The main focus of the research will be the taxonomic study on bryozoans from the East Gondwana rift system, accompanied by petrographic and geochemical methods for environmental reconstructions. Expected outcomes of the intended study are new insights into the biogeography of Early Permian bryozoans with identification of taxonomic affinities of the east Gondwanan fauna, relationships to other Gondwanan (e.g., the Oman fauna), Palaeo-Tethyan and Northern Hemisphere faunas. Furthermore, new insights are expected into the distributional patterns of Southern Hemisphere Bryozoa along a north-south gradient spanning 20° of palaeolatitude and open-marine to more restricted marine conditions. Palaeoecological aspects of the study will illuminate the influence of glaciation and deglaciation events on the development and distribution of bryozoan faunas of East Gondwana, and improve their use for climate reconstruction. Biostratigraphic differentiation of faunas ranging from close to the Carboniferous-Permian boundary to the Kungurian may provide new tie points for improved correlation to the global time scale.

该提案旨在研究东冈瓦纳裂谷系统的下二叠纪苔藓虫动物群，由于大多数物种都存在钙质骨骼，并且苔藓虫在海洋生境中广泛分布，因此它们是化石记录中最具代表性的大型无脊椎动物之一。东冈瓦纳裂谷系统呈南北走向，古纬度范围从 40° 到 40°。 Ø60°S，北部（帝汶）海洋条件开阔，南部（珀斯盆地）海洋条件更为有限，东冈瓦纳裂谷系统的盆地记录了早二叠世南半球冰消期的历史，以及含有以苔藓虫骨架为主的下二叠统浅海碳酸盐岩相，以前的研究非常有限，主要研究重点是苔藓虫的分类学研究。来自东冈瓦纳裂谷系统的研究，以及用于环境重建的岩石学和地球化学方法，预期研究的预期结果是对早二叠世苔藓虫的生物地理学有了新的认识，并确定了东冈瓦纳动物群的分类学亲缘关系以及与其他冈瓦纳动物群的关系。 、阿曼动物群）、古特提斯动物群和北半球动物群此外，预计对分布模式有新的见解。南半球苔藓虫沿着横跨 20° 古纬度的南北梯度和开放海洋到更受限制的海洋条件的研究将阐明冰川和消冰事件对东冈瓦纳苔藓虫动物群的发展和分布的影响。 ，并改善其在气候重建中的应用，可以提供从石炭纪-二叠纪边界附近到昆古纪的动物群的生物地层分化。新的连接点可改善与全球时间尺度的相关性。

项目成果

Postglacial Early Permian (late Sakmarian–early Artinskian) shallow-marine carbonate deposition along a 2000 km transect from Timor to west Australia

• DOI: 10.1016/j.palaeo.2014.05.009
• 发表时间: 2014-09
• 期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
• 作者: D. Haig;E. McCartain;A. Mory;Gilsel Borges;V. Davydov;M. Dixon;A. Ernst;Stefan Groflin;E. Håkansson;M. Keep;Z. D. Santos;G. Shi;Jacinto Soares

Bryozoan fauna from the Permian (Artinskian-Kungurian) Zhongba Formation of southwestern Tibet

西藏西南部二叠纪（阿廷斯克期-昆古尔期）仲巴组苔藓虫动物群

• DOI: 10.26879/585
• 发表时间: 2016
• 期刊: Palaeontologia Electronica
• 影响因子: 2