The characterization of the Permian Cathaysia Flora based on fossil cuticles

基于化石角质层的二叠纪华夏植物区系特征

• 批准号: 290136475
• 负责人: Professor Dr. Hans Kerp
• 金额: --
• 依托单位: Institute of Geology and Palaeontology
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/290136475?language=en
• 关键词: characterization; Permian; Cathaysia; Flora; based

The Permian witnessed one of the most extreme climate transitions of the Phanerozoic, from deep icehouse conditions in the Early Permian to a greenhouse state by the Late Permian time. The collision of Gondwana with Eurasia in the Late Pennsylvanian resulted in the formation of thesupercontinent Pangea, which had a significant impact on the climate. Cathaysia is one of the four floral provinces that emerged during the late Paleozoic. The Cathaysia flora comprises several elements that are also known from Euramerica, but also a number of endemic taxa. As thetaxonomy is primarily based on macromorphological criteria and relationships of taxa often remain unclear, detailed studies of the Cathaysia flora are necessary for a better understanding of its relationships to the other floral provinces. Cuticular analysis not only allows a much more precisedefinition and delimitation of individual taxa, but it also provides important information on the palaeoecology and palaeoclimate on the basis of biological criteria, i.e. the epidermal anatomy. This project will focus on the Palougou section in NW-Shanxi, which is now generally regarded as a standard reference section for the Cathaysia flora. This continuously exposed section includes several horizons with plants with good cuticle preservation and starts in the Upper Carboniferous and runs up to the Permian-Triassic boundary. This project embraces a comprehensive study of cuticles from the successive cuticle-bearing horizons in order to: (1) establish a sound definition, delimitation, and ecological characterization of individual taxa on the basis of biological criteria, (2) reconstruct palaeoatmospheric CO2 levels of the successive associations based on stomatal densities (SD) and indices (SI), and (3) compare Cathaysia floras with Euramerican floras from thesimilar palaeolatitudes. We anticipate that this project will lead to a much better understanding of the Cathaysia flora and its relations to other time-equivalent palaeo(sub)tropical floras.

二叠纪见证了显生宙最极端的气候转变之一，从早二叠世的深冰库条件到晚二叠世的温室状态。冈瓦那与欧亚大陆在宾夕法尼亚晚期的碰撞形成了对气候产生重大影响的超大陆联合古陆。华夏是我国晚古生代出现的四个植物区系省份之一。华夏植物区系包括几个成分，也是已知的欧亚大陆，但也有一些特有的分类群。由于分类主要基于宏观形态标准，分类群之间的关系往往不清楚，因此有必要对华夏植物区系进行详细的研究，以更好地了解它与其他植物区系的关系。角质层分析不仅可以更精确地定义和划定单个类群，而且还可以根据生物学标准，即表皮解剖，提供关于古生态和古气候的重要信息。该项目将重点放在山西西北部的帕洛沟段，该段现在通常被认为是华夏植物区系的标准参考段。这一连续暴露的剖面包括几个层位，其中包括角质层保存良好的植物，开始于上石炭统，一直延伸到二叠系-三叠系界线。该项目包括对连续角质层含角质层的全面研究，以便：(1)根据生物学标准建立合理的单个类群的定义、划界和生态特征；(2)基于气孔密度(SD)和指数(SI)重建连续群丛的古大气二氧化碳水平；(3)比较华夏植物群和类似古纬度的欧美植物群。我们预计这一项目将有助于更好地了解华夏植物区系及其与其他时间相当的古(亚)热带植物群的关系。

项目成果

Reconstruction of a Small-Leaved Cordaitalean Plant from the Permian of North China by Means of Cuticular Analysis

• DOI: 10.1086/704375
• 发表时间: 2019-07
• 期刊: International Journal of Plant Sciences
• 影响因子: 2.3
• 作者: Malte Backer;B. Bomfleur;H. Kerp

Frond morphology and epidermal anatomy of Compsopteris wongii (T. Halle) Zalessky from the Permian of Shanxi, China

山西二叠纪黄毛蕨叶体形态及表皮解剖

• DOI: 10.1007/s12542-019-00471-0
• 发表时间: 2019-09
• 期刊: Paläontologische Zeitschrift
• 作者: Malte Backer;Ming-Li Wan;Jun Wang
• 通讯作者: Jun Wang

Reinvestigation of conchostracans (Crustacea: Branchiopoda) from the Permian–Triassic transition in Southwest China

• DOI: 10.1016/j.palwor.2019.04.007
• 发表时间: 2020-06
• 期刊: Palaeoworld
• 影响因子: 1.7
• 作者: F. Scholze;S. Shen;Malte Backer;Haibo Wei;Marcel Hübner;Ying Cui;Zhuo Feng;J. Schneider