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首页> 外文期刊>Geobios: Paleontologie, Stratigraphie, Paleoecologie >Lopingian (Late Permian) brachiopods around the Wuchiapingian-Changhsingian boundary at the Meishan Sections C and D, Changxing, South China
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Lopingian (Late Permian) brachiopods around the Wuchiapingian-Changhsingian boundary at the Meishan Sections C and D, Changxing, South China

机译：中国南部长兴梅山C段和D段的五叠坪-长兴盆地边界附近的罗平岩（晚二叠纪）腕足动物

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摘要

The strata below the defined Wuchiapingian-Changhsingian boundary GSSP are mostly covered and obscured by faulting at the Meishan Section D. Therefore, it is very difficult to collect fossils there. After an intensive excavation at Meishan Section C, a diverse fauna based on high-resolution biostratigraphy comprising brachiopods, ammonoids, conodonts, fusulinids and small foraminifers were found. Among these fossils, brachiopods are the most dominant. Eleven species of 10 genera based on more than 1300 specimens are identified. This brachiopod fauna is of late Wuchiapingian-Changhsingian of Lopingian (Late Permian) in age as well constrained by the associated ammonoid Pseudogastrioceras sp., Jinjiangoceras and Konglingites sp., the fusulinid Palaeofusulina and the conodont lineage from C. longicuspidata to C. wangi. In terms of the changes of brachiopod fauna composition around Wuchiapingian-Changhsingian boundary, it clearly indicates a continuous transgression from the upper part of the Lungtan Formation to the lower part of the Changhsing Formation. A new species, Neochonetes (Huangichonetes) meishanensis, is described and some other species are discussed based on the new collection from Meishan Sections C and D.
机译：在梅山断面D段断层处，五叠坪-长兴格界线GSSP之下的地层大部分被覆盖和遮盖。因此，在那里很难收集化石。在梅山C区进行密集挖掘后，发现了一种基于高分辨率生物地层学的动物群，其中包括腕足动物，氨类动物，牙形石，融合藻和小型有孔虫。在这些化石中，腕足动物是最主要的。根据1300多个标本，鉴定了10个属的11种。该腕足动物群的年龄为罗平岩（晚二叠纪）的五七十年代-长兴氏晚期，并受到相关的氨类假单胞菌Pseudogastrioceras sp。，Jinjiangoceras和Konglingites sp。，融合融合类古古菌和C. longicuspidata的牙形血统的限制。从五叉坪-长兴边界附近的腕足动物区系组成变化来看，清楚地表明了龙潭组上部到长兴组下部的连续侵袭。描述了一种新的物种，眉山的新线虫（Huangichonetes），并基于眉山C和D区的新物种讨论了其他一些物种。

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